How a slinky falls in slow motion

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  • čas přidán 18. 07. 2021
  • This is not just true of slinkies - if you release a steel rod from the top, the top really starts falling before the bottom. If you hit a tennis ball with a racket, a wave has to travel from the strings to your hand before you feel it - and the ball is well on its way to the net by this time. If you hit a golf ball, the ball is well on its way to the hole before you can feel it. Rigid bodies aren't truly rigid and understanding this is essential to understanding the way the world works

Komentáře • 10K

  • @veritasium
    @veritasium  Před 2 lety +24038

    This is an excerpt from a video I made 10 years ago - seemed like the perfect thing to show in vertical format. I was unaware Action Labs had recently made a video about the same thing. A regular video should be out Friday/Saturday this week.

    • @DashFlashTheLife
      @DashFlashTheLife Před 2 lety +481

      Derek and action lab collab??

    • @ZeptionT
      @ZeptionT Před 2 lety +77

      I remember this vid

    • @0oJMPo0
      @0oJMPo0 Před 2 lety +260

      Veritasium and The Action Lab are my favorites science youtube channels😁🙌🏼

    • @newagepeople
      @newagepeople Před 2 lety +25

      someones using reddit

    • @BloodAsp
      @BloodAsp Před 2 lety +209

      What? Don't apologize for putting out a video similar to the action lab, that guy uses peoples video ideas all the time, and does not credit them.

  • @wannabmrsc
    @wannabmrsc Před 2 lety +20858

    Slinky: **isn’t falling**
    Gravity: wait that’s illegal

    • @valewind4665
      @valewind4665 Před 2 lety +517

      No because the center of mass of the slinky is still moving downwards as the top is progressively going downwards towards the bottom. So the slinky is still moving, even if the bottom is staying still. So yes, it is falling.

    • @retiredmichaeljackson4950
      @retiredmichaeljackson4950 Před 2 lety +72

      Due to inertia of rest

    • @truckertruthetrutrucker5357
      @truckertruthetrutrucker5357 Před 2 lety +228

      @@valewind4665 the slinky is falling but the bottom is proof that there is anti gravity potential in coils. We should be looking at this potential a bit more closely for possible travel at high g’s

    • @ghostwarhammer007
      @ghostwarhammer007 Před 2 lety +11

      Exactly

    • @valewind4665
      @valewind4665 Před 2 lety +32

      @@truckertruthetrutrucker5357 fair point, but my original point was not to further explain how we could use this to our advantage in anyway, but to explain to op that yes, the slinky is still moving.

  • @QuantumRead
    @QuantumRead Před 2 lety +30520

    "This is the longest slinky I have access to"
    Implying there's longer slinkies but they're in secret underground vaults protected by the pope

    • @rafetizer
      @rafetizer Před 2 lety +1169

      I'm sure the flat earth community is hard at work to uncover these hidden slinkys.

    • @badgoogle9938
      @badgoogle9938 Před 2 lety +118

      @@rafetizer we are trying but we haven't uncovered anything just yet, I think they are in the same room as the real globes.

    • @yippeekaiyay7526
      @yippeekaiyay7526 Před 2 lety +5

      Was it the one from questacon in Canberra Australia?? I think I had the same one growing up lol

    • @kraven4444
      @kraven4444 Před 2 lety +42

      some objects are just too powerful for mere mortals to wield

    • @erezsolomon3838
      @erezsolomon3838 Před 2 lety

      @Peaker’s Lab or rather, *not* begging

  • @levinl.2613
    @levinl.2613 Před rokem +1654

    3030: "and this is how we invented time machine"

    • @makosen
      @makosen Před rokem +73

      Slinkies start to glitch in matrix

    • @uygarozturk1326
      @uygarozturk1326 Před rokem +53

      3030 they will say it was an underrated comment

    • @dow_izz
      @dow_izz Před rokem +19

      It was an underrated comment.

    • @uygarozturk1326
      @uygarozturk1326 Před rokem +15

      @@dow_izz hey dude, how is it there in 2030?!

    • @dow_izz
      @dow_izz Před rokem +9

      @@uygarozturk1326 (I answered, but you have to wait until 3035 to get this CZcams notification) sorry dude🥲

  • @MagicianStevey
    @MagicianStevey Před rokem +916

    Now I wonder what happens when you get a REALLY long one and drop it from really high. Would it look like it’s floating for a couple seconds? If so then cool

    • @Eriquee
      @Eriquee Před rokem +59

      I wish there would be a video seeing something like that

    • @dot2184
      @dot2184 Před rokem +117

      I've thought about that too, but a slinky so long that you could stare at the bottom for a few seconds would probably break under its own weight

    • @thunderp1719
      @thunderp1719 Před rokem +14

      Your answer is in 2nd one. It will behave like that.

    • @ylstorage7085
      @ylstorage7085 Před rokem +2

      the center of the gravity of the slinky still follow the rule of gravity.
      the top of the slinky is accelerated initially with twice the weight of the entire slinky, and no one was complaining about gravity forcing the top portion with double the harshness...
      Gravity is a F**KING weak dweeb anyways. The entire planet's mass pulling on me can be countered by simply jumping. You know how ridiculous powerful the force of 1 unit of electric charge on another unit of electric charge? That's why we have names like "one absolute unit"
      we can unify All other forces in the universe, yes even the one Luke used to murder 10 million people in one go, under one equation (E=mc2 ? no idea, too dumb and didn't study), except for Gravity, because it is such a lame weak-a** sauce. Even Eienstein said "F**K it" and gave up on it.

    • @The_Eray
      @The_Eray Před rokem +20

      Also springs up another question. What if some mass is dangling on the end of the coil? Will that piece of mass "float" together with the end of the coil or will it fall too?

  • @AzaleyaReid
    @AzaleyaReid Před 2 lety +22004

    It's like in cartoons when the character runs off a cliff, but is still running on the spot and falls seconds later.

    • @kantoumanjigang
      @kantoumanjigang Před 2 lety +737

      Until and unless he sees that there's nothing under his feet.

    • @R4GNAR0G
      @R4GNAR0G Před 2 lety +402

      @@kantoumanjigang Then wave at the camera.

    • @duckywucky4812
      @duckywucky4812 Před 2 lety +205

      @@kantoumanjigang schrodingers gravity

    • @sgt.megashi4984
      @sgt.megashi4984 Před 2 lety +204

      Cuz if u look down, that's when the gravity strikes

    • @lightbub2888
      @lightbub2888 Před 2 lety +22

      Underated af 😂

  • @Icefierastar
    @Icefierastar Před 2 lety +8285

    “This is the longest slinky i had access to” get this man access to the longer, forbidden dark slinkys

  • @BigRW
    @BigRW Před rokem +164

    This is the most counterintuitive thing I've ever seen.

    • @sonteguh
      @sonteguh Před 3 měsíci +3

      Gravity lagged in a second

  • @glitchGTVR
    @glitchGTVR Před rokem +1

    Me: **tapes a slinky to my head and jumps off a building**

  • @HarnaiDigital
    @HarnaiDigital Před 2 lety +6025

    The slinky is just like a Cartoon character when He sees that there's nothing down beneath him, He falls.

  • @opaldrawz797
    @opaldrawz797 Před 2 lety +3156

    “That is the longest slinky I have access to.”
    The question is, what slinkies do you NOT have access to?!

    • @R4GNAR0G
      @R4GNAR0G Před 2 lety +103

      NASA or Area-51 kind, probably.
      Might as well SCP.

    • @berlinflight_tv
      @berlinflight_tv Před 2 lety +145

      „Sir, this slinky is above your clearance level.”

    • @janetfrankline5981
      @janetfrankline5981 Před 2 lety +5

      More like him saying he didn't have access Orrrrr A means to get a slinky longer than this 😆😅

    • @janetfrankline5981
      @janetfrankline5981 Před 2 lety +2

      @@berlinflight_tv 🤣

    • @B58-Minecraft
      @B58-Minecraft Před 2 lety +10

      The one you see connecting a truck and a container

  • @giannijimenez5684
    @giannijimenez5684 Před rokem +41

    Someone should make a slinky almost as tall as the Empire State Building and then let it fall from the top so it’s just staying still for a while

  • @samfordja
    @samfordja Před rokem +26

    The center of mass of that slinky is dropping as the top of the slinky falls. Since the center of mass is falling the lower portion of the slinky doesn't need to fall till the center of mass reaches the point where it is no longer shrinking as the top collapses. This would be the same as if you put it on an elastic band.

    • @rohanking12able
      @rohanking12able Před 8 měsíci

      Same thing the earth does

    • @homeworkofficial
      @homeworkofficial Před 2 měsíci

      Centre of mass of slinky should at the centre of the slinky but at first it isn't moving.
      That's not how it works 😊

    • @atwarroyal8770
      @atwarroyal8770 Před měsícem

      @@homeworkofficial I am reading this about a month later, but what original comment said is 100 percent valid. During free fall, geometry of slinky is changing, and C.O.M isn't exactly half way between topmost and bottom most part of slinky .

  • @ErikVRed
    @ErikVRed Před 2 lety +3348

    Crazy how the top of a slinky can get beneath the bottom before the bottom starts moving down

    • @IdgaradLyracant
      @IdgaradLyracant Před 2 lety +67

      Just an illusion, the bottom is just moving up at the same rate as it is falling.

    • @chessicles99
      @chessicles99 Před 2 lety +422

      @@IdgaradLyracant well that's equivalent to the bottom isn't moving lol

    • @ErikVRed
      @ErikVRed Před 2 lety +172

      @@IdgaradLyracant that’s great, but it doesn’t contradict what I said, the top still reaches below the bottom

    • @piercingspear2922
      @piercingspear2922 Před 2 lety +84

      @@IdgaradLyracant It's actually not. When you hold a slinky, there is a force-ballance between the force you applied to hold it vs the tension force. When you then release the top part, the tension force that hold the bottom part against gravity doesn't instanteniously dissappear. This "information" about the force become zero travels at finite speed to the bottom via the propagating wave on the slinky. Once the wave reaches the bottom part, the tension force that holds the bottom part then become zero and it start to fall down.

    • @newroo
      @newroo Před 2 lety +3

      haxx

  • @CJ-vt6km
    @CJ-vt6km Před 2 lety +4278

    I think this proves it. Slinkies are magic.

    • @geronimo9193
      @geronimo9193 Před 2 lety +49

      This guy just had a poor explanation... Gravity pulls the slinky as the slinky stretches the force of recoil gets stronger til eventually it stops. When you let it go that upward force against gravity is still being applied while the slinky collapses keeping it afloat til the top meets the bottom and that force is dissipitated

    • @vikasshukla7086
      @vikasshukla7086 Před 2 lety +6

      See, a slinky is a spring which means it can be streched or squeeze, and when you drop it, for a slinky to fall down it needs all of its coils squeezed so the slinky wouldn't fall until it's compact like in the first video clip

    • @weebo518
      @weebo518 Před 2 lety

      🤓

    • @shafkatctg760
      @shafkatctg760 Před 2 lety +32

      @@geronimo9193 babababab. i don’t hear you. slinky's are magic

    • @4iden.n673
      @4iden.n673 Před 2 lety

      nope just physics

  • @deannabriones4111
    @deannabriones4111 Před měsícem +1

    20 missed calls from laws of physics

  • @GSFigure
    @GSFigure Před 6 dny +2

    The fact that a slinky is capable of defying physics explains why its arrangement gets screwed up after 10 minutes has been spent playing with it.

  • @maskedrebel9670
    @maskedrebel9670 Před rokem +3606

    Slinky: **defeats gravity**
    Newton: "son of a bitch!"

    • @bait5257
      @bait5257 Před rokem +158

      @DerrickPack1998 by being smaller than Planck constant?

    • @CarlJohnsonSmokesBigSmoke
      @CarlJohnsonSmokesBigSmoke Před rokem +15

      @@bait5257 OMG so small🤣🤣

    • @oyasumioooyasumicloseyoureyes
      @oyasumioooyasumicloseyoureyes Před rokem +1

      The arab guy that actually came up with the idea of gravity: "both of you are sons of bitches!"
      The Indian guy who came up with the idea of gravity before the arab guy: "the three of you are sons of bitches!"

    • @aeroscantsee1665
      @aeroscantsee1665 Před rokem +42

      @@bait5257 that was brutal.

    • @BRUH-lx3jv
      @BRUH-lx3jv Před rokem +2

      @@bait5257 Oh! lmao

  • @mindlessmrawesome
    @mindlessmrawesome Před 2 lety +3623

    Thank you epic science man

    • @sunwavee5748
      @sunwavee5748 Před 2 lety +21

      Great comment!

    • @australianoutback
      @australianoutback Před 2 lety +6

      Same way trade centre 7 collapsed from an office fire.

    • @eliaskjrbo8142
      @eliaskjrbo8142 Před 2 lety +4

      @Dont Read My Channel Banner 😂

    • @Galaxy_World
      @Galaxy_World Před 2 lety

      Ur welcome

    • @xp8969
      @xp8969 Před 2 lety +3

      @@australianoutback very well said brother, the government has some unbelievable conspiracy theories

  • @impactdamonke
    @impactdamonke Před 7 dny +1

    gravity been real quiet since this dropped

  • @tnaplastic2182
    @tnaplastic2182 Před rokem +23

    I am waiting for you getting access to the Black Project Slinkies! 😜🙈

  • @stylish_pengu
    @stylish_pengu Před 2 lety +810

    gravity: "exists"
    slinky: you might have to wait for this to happen

  • @dre4dfulsaiyan265
    @dre4dfulsaiyan265 Před 2 lety +1648

    Actually this was a bug added back in the Matrix’s 5.14 update but never removed due to the engines mechanics

    • @cc-oo7vn
      @cc-oo7vn Před 2 lety +135

      Why would they design it like that? Its clear that they only care about the money smh.

    • @murkkz1679
      @murkkz1679 Před 2 lety +8

      @@cc-oo7vn 😂😂🤣🤣

    • @MarkyIsNow
      @MarkyIsNow Před 2 lety +52

      @@cc-oo7vn true man they greedy af

    • @hetzer7366
      @hetzer7366 Před 2 lety +8

      @@cc-oo7vn so rigged

    • @redprime3210
      @redprime3210 Před 2 lety +6

      Absolutely love this

  • @adb012
    @adb012 Před rokem +7

    What nobody mentions here is that the center of mass of the slinky still falls at 9.8 m/s2 (i.e. it is free falling with the acceleration of gravity), which means that, to compensate for the bottom coils not falling, the top coils are falling much faster than what they would if you just cut the top few coils and dropped them alone. An the reason is simple: The same tension that is pulling up on the bottom coils cancelling the force of gravity, is pulling down on the top coils adding to the force of gravity.

  • @Plunger_cameraman142
    @Plunger_cameraman142 Před 10 dny +1

    scientists: it is impossible to make an object float
    slinky:

  • @ruskie8308
    @ruskie8308 Před 2 lety +1490

    You should totally make a ''Veritasium shorts'' and just post the experiment parts of videos there!!! just a thought :) would be cool

  • @Toxic_Tornado
    @Toxic_Tornado Před rokem +1200

    "I wish I could fly :l"
    Slinkies: *Hello there.*

    • @adrriannm
      @adrriannm Před rokem +9

      general slinky

    • @fliegendeluftwaffeli835
      @fliegendeluftwaffeli835 Před rokem +15

      @@adrriannm
      General Slinky
      Infantry Damage: +20%
      Armoured Fighting Vehicle Damage: +15%
      Artillery Damage: +20%
      Airforce Damage: +40%
      Navy Damage +15%
      Movement: +40 Miles
      HP: +420%

    • @Martin-rh6bn
      @Martin-rh6bn Před rokem +3

      *Becomes Slinky*

    • @84rinne_moo
      @84rinne_moo Před rokem +2

      @@adrriannm I came here to make a funny comment and this just made me spit out my drink lmfao 😂

    • @stanleybochenek1862
      @stanleybochenek1862 Před rokem

      oh hi um what are you doing?

  • @arcie3716
    @arcie3716 Před rokem +3

    Now I’m gonna think about this every time I see a slinky

  • @genacess5646
    @genacess5646 Před rokem +9

    Gravity: "I am the law!"
    Slinky: " im about to end this mans whole career!

  • @Random-df1jd
    @Random-df1jd Před rokem +114

    Gravity: I am inevitable
    Slinky: and I, am slinky

  • @smokingpacman
    @smokingpacman Před rokem +25

    The real question is: is the centre of mass falling at the same speed as if u dropped the slinky uncompressed

    • @NicolasGuerraOficial
      @NicolasGuerraOficial Před rokem +3

      Yes, there is no reason to think otherwise, also the upper part falls faster due to gravity and tension, compensating for the lower part to stay still.

    • @krishgarg2806
      @krishgarg2806 Před rokem

      yes, because the acceleration of the center of mass depends on the external force, which here are gravity and the person holding. Compression or elongation will create internal forces which won't affect the com.

  • @jrod9733
    @jrod9733 Před 3 měsíci +1

    The center of gravity continues to fall towards earth and this is a good visual of where the center of gravity is at all times

  • @TheiTempo
    @TheiTempo Před 2 lety +411

    Top slinky: we droppin boiiisss
    Bottom slinky: WE DROPPED?!

    • @pulkitmohta8964
      @pulkitmohta8964 Před 2 lety +4

      Just like internet explorer

    • @ambadasbudkhale3703
      @ambadasbudkhale3703 Před 2 lety +1

      Just like Mc bedrock

    • @RustOnWheels
      @RustOnWheels Před 2 lety +1

      It’s like an open air music festival where you can see the speed of sound from crowd reactions from front to back when the beat drops.

    • @dev_invc
      @dev_invc Před 2 lety

      @CZcams official✔ gravity worked ... The centre of mass of slinky was always in a free fall accelerating at 9.8 m/s^2 ....

    • @caseypardini9191
      @caseypardini9191 Před 2 lety

      @@dev_invc since energy was out to spread it apart once let go it wants to retract back to its original state. Following Newton’s law both ends will converge at the same speed. Since the top is falling at the speed of gravity the bottom is as well. But since it is also being pulled down by gravity the bottom has equal forces which negate each other making it stay in the same spot.

  • @appurajosh
    @appurajosh Před 2 lety +176

    I love how he's dressed up just to drop a slinky

    • @eddyhoopin
      @eddyhoopin Před 2 lety +10

      gotta get fancy so the viewers see you in slow motion

  • @X4R80
    @X4R80 Před rokem +3

    I’ve seen this so many times but it’s just so cool everytime

  • @burningwolf_9641
    @burningwolf_9641 Před rokem +5

    Issac Newton be like: “impossible…”

  • @themaster3305
    @themaster3305 Před rokem +742

    Newton: “*The force of gravity affects everything with mass in the universe*”
    Slinky: “And who decided that?”

    • @priyanshu3494
      @priyanshu3494 Před rokem +11

      Escanor🔥🔥

    • @YallaMiami
      @YallaMiami Před rokem

      9/11 was an inside job

    • @sambhabgiri573
      @sambhabgiri573 Před rokem +13

      I get the joke but I needed to say this, the spring force balances the weight

    • @robertt9342
      @robertt9342 Před rokem +8

      @@sambhabgiri573 . It wouldn’t work without gravity.

    • @clarckkim
      @clarckkim Před rokem +2

      @@robertt9342 indeed

  • @ThomasLindsey_
    @ThomasLindsey_ Před 2 lety +3270

    Can we find a way to glitch this to fly or levitate

    • @NOTZeroBlank
      @NOTZeroBlank Před 2 lety +968

      No, they patched it last year

    • @Lowkeyyhigh
      @Lowkeyyhigh Před 2 lety +176

      @@NOTZeroBlank damn

    • @seagull668
      @seagull668 Před 2 lety +53

      I got 5 likes with saying lol so i edit this comment that
      First things first
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      I know that strength, it don't come, don't come without strategy
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      Is you a believer?
      I get a unicorn out of a zebra
      I wear my uniform like a tuxedo
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      Love you Ms. Cita, the son of a leader
      I know the bloomin' don't come without rain
      I know the losin' don't come without shame
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      Hol' up, hol' up, last thing last
      I know that Tunechi don't come without Wayne
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      Pain!
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      Last things last
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      You're the face of the future, the blood in my veins, oh-ooh
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      But they never did, ever lived, ebbing and flowing
      Inhibited, limited 'til it broke open and rained down
      It rained down, like...
      Pain!
      You made me a, you made me a believer, believer
      Pain!
      You break me down and build me up, believer, believer
      Pain
      Oh, let the bullets fly, oh, let them rain
      My life, my love, my drive, it came from...
      Pain!
      You made me a, you made me a believer, believer
      A pistol is a handgun, more specifically one with the chamber integral to its gun barrel, though in common usage the two terms are often used interchangeably.[1] The English word was introduced in ca. 1570 - when early handguns were produced in Europe and is derived from the Middle French pistolet (ca. 1550), meaning a small gun or knife. In colloquial usage, the word "pistol" is often used to describe any type of handgun, inclusive of revolvers (which have a single barrel and a separate cylinder housing multiple chambers) and the pocket-sized derringers (which are often multi-barrelled).
      A government-issue M1911 pistol manufactured in 1914
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      Soviet TT pistol manufactured in 1937
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    • @ghostly360
      @ghostly360 Před 2 lety +27

      @@NOTZeroBlank if it's only a hotfix it's fine. You can just turn off the wifi before waking up

    • @NOTZeroBlank
      @NOTZeroBlank Před 2 lety +16

      @@ghostly360 Actually, i have been developing a mod that adds this and more so wait for more!

  • @hypocratus7341
    @hypocratus7341 Před rokem

    Well for those looking for an explanation , the force in a spring/slinky doesnt change instantly and thus the lower end remains in equilibrium for some time even after the upper end has been released because the tension applied by the part just above it has pretty much balanced its weight like it had before the slinky was released and thus equilibrium is maintained for a while. Pretty cool!

  • @Liamplayzgtag
    @Liamplayzgtag Před 8 dny

    For those of you who dont know, Mechanical engineer Richard James invented the Slinky by accident. In 1943, he was working to devise springs that could keep sensitive ship equipment steady at sea. After accidentally knocking some samples off a shelf, he watched in amazement as they gracefully “walked” down instead of falling.

  • @firefightszz
    @firefightszz Před 2 lety +1055

    It literally levitates for a period of time, that’s sick

  • @petergeorgehill
    @petergeorgehill Před 2 lety +1062

    “The longest slinky I had access to”
    Lol he makes it sound like it’s confidential government tech

  • @FriskMeemur
    @FriskMeemur Před rokem +1

    Pretty frickin cool, as always.
    Your channel never ceases to amaze me

  • @Jivvi
    @Jivvi Před měsícem

    Much better explanation than what I've sometimes heard about how "the bottom doesn't know the top has been dropped yet" as though it was somehow falling at the speed of light.
    The force pulling it back together is perfectly cancelled out by the force making it fall, so it doesn't do either.

  • @godzillagorilla986
    @godzillagorilla986 Před 2 lety +1106

    When should you wash a stinky slinky?
    During spring cleaning

    • @davidthedankest4423
      @davidthedankest4423 Před 2 lety +25

      nice one

    • @zneark3775
      @zneark3775 Před 2 lety +10

      i understand english but it's not my native language, can you explain this joke to me pls?

    • @Amine--Z
      @Amine--Z Před 2 lety +4

      Silky, and not stretchy at all

    • @kurtwagner6574
      @kurtwagner6574 Před 2 lety +4

      You are a real master of fun

    • @macmac1022
      @macmac1022 Před 2 lety +26

      @@zneark3775 Because slinkys are like springs so to clean one you are cleaning a spring. Hope that helps. OH and spring cleaning is often a saying to clean up in spring time.

  • @rohandennisjr.6264
    @rohandennisjr.6264 Před 2 lety +2166

    Gravity exists…
    Slinky: “eeeh… I don’t really feel like it”

    • @Zes2005
      @Zes2005 Před 2 lety +16

      🤣🤣good one

    • @xxmister_malicaixx9306
      @xxmister_malicaixx9306 Před 2 lety +14

      I was gonna say the bottom of the slinky be like uhm that’s not how gravity works

    • @nguyenhatung.3322
      @nguyenhatung.3322 Před 2 lety +7

      Do you believe in gravity?

    • @yajuvendrasinghrajpurohit7888
      @yajuvendrasinghrajpurohit7888 Před 2 lety +3

      Actually just make an fbd diagram you'll understand whats happening

    • @OG-Capo---
      @OG-Capo--- Před 2 lety +3

      It's crazy because people actually believe there's no gravity. But if there was no gravity then how would we all exist?

  • @saiamrutkar3969
    @saiamrutkar3969 Před 4 měsíci +1

    It actually happens that when the top of slinky reaches bottom of slinky it speed is 19.6m/s and then there is a delay same the time taken for the connection of top and bottom of slinky and then it continues falling at normal rate thats why when slinky and other object are thrown together they touch the ground at same time even though the other object has travelled the half distance at the same time when slinky top reaches bottom.
    Thank You.

  • @tellmetogostudy5511
    @tellmetogostudy5511 Před rokem

    Studying for physics and this actually helps with understanding longitudinal wave compared to transverse wave. Thanks!!!!

  • @_MrMoney
    @_MrMoney Před 2 lety +3765

    We need to get a giant slinky up to the stratosphere that reaches almost to the ground and see the bottom of it just levitate for like 10 minutes

    • @Kaiyats
      @Kaiyats Před 2 lety +369

      This has to be humanities next mega project screw the MSG sphere

    • @highq9039
      @highq9039 Před 2 lety +68

      I feel like that’s a dangerous idea.

    • @RCHomemadeHobbies
      @RCHomemadeHobbies Před 2 lety +28

      Lol we would need a huge helicopter 🚁

    • @GayKermit-._-.
      @GayKermit-._-. Před 2 lety +61

      @@highq9039 it's a slinky bruh what's it gonna do?

    • @sg5176
      @sg5176 Před 2 lety +11

      Do you know what wind is?

  • @terrarizer766
    @terrarizer766 Před 2 lety +1035

    Gravity: FINALLY A WORTHY OPPONENT! OUR BATTLE SHALL BE LEGENDARY!

    • @Yusuketh443
      @Yusuketh443 Před 2 lety +36

      cartoon logic: are you sure about that?

    • @MajorBunghole
      @MajorBunghole Před 2 lety +12

      Flat earthers and their disbelief in gravity is hilarious

    • @royalcod7159
      @royalcod7159 Před 2 lety +3

      Magnets are stronger than gravity

    • @dorukortakci
      @dorukortakci Před 2 lety +6

      @@royalcod7159 So?? What does this have to do with the actual comment?

    • @poserboy9494
      @poserboy9494 Před 2 lety +1

      Not as worth is Indian movie protagonists

  • @ak-34
    @ak-34 Před 9 měsíci +1

    The slinky is like a really obedient kid, it waits for you to come back!

  • @NoahBurgess
    @NoahBurgess Před rokem +2

    This will definitely be used in the future to create something like a hoverboard

  • @huntermorgan6177
    @huntermorgan6177 Před 2 lety +241

    We call it the "Wile E. Coyote Effect"

  • @kidsvillacorta9301
    @kidsvillacorta9301 Před 2 lety +3903

    Someone needs to make an absolutely MASSIVE slinky that would take a few seconds to fall down so you can see it just floating there
    Edit: An argument is happening in the replies

    • @DekuStickGamer
      @DekuStickGamer Před 2 lety +650

      Make a skyscraper sized slinky, put a platform for people to stand on the lowest ring, and watch people stand like nothings happening whilst the structure above them collapse, and then instantly become subjected to 10 ms2 of acceleration

    • @kidsvillacorta9301
      @kidsvillacorta9301 Před 2 lety +75

      @@DekuStickGamer YES

    • @Alexander-vs2ee
      @Alexander-vs2ee Před 2 lety +76

      @@DekuStickGamer that is completely impossible and wrong.

    • @nathanr21
      @nathanr21 Před 2 lety +537

      @@Alexander-vs2ee shhhhhhhhhhh. This is the internet. We dont say things like that

    • @reallyidioticgamer
      @reallyidioticgamer Před 2 lety +326

      @@Alexander-vs2ee you must be boring as hell in parties, which is also the reason that you aren't invited to them. 😐

  • @suikerbrood8505
    @suikerbrood8505 Před rokem +9

    Me wondering what happens when you don’t drop the top
    Gravity: sh¡t

  • @aquillae
    @aquillae Před rokem

    We need more short videos like this 👍👍

  • @mohamedaakhil
    @mohamedaakhil Před 2 lety +670

    Someone should make an extremely long slinky that stretches over the height of an entire building but just above the ground. They could also have like a transparent tube inside of which they can drop the slinky so it can support it instead of collapsing. We'd be able to see it float for at least 10 seconds like magic!

    • @vegetawithamoustache8725
      @vegetawithamoustache8725 Před 2 lety +27

      @@anonymoususer855 maybe he didn't know the spelling but he knew it was wrong that happens to me all the time and it's faster to just type it wrong then to search it up

    • @mohamedaakhil
      @mohamedaakhil Před 2 lety +13

      @@oldacc_ihatebrickplanet12 haha ok im not a scientist just had a random thought

    • @mohamedaakhil
      @mohamedaakhil Před 2 lety +6

      @@anonymoususer855 ok

    • @suedenim6590
      @suedenim6590 Před 2 lety +11

      So 911 was an inside job then

    • @yummyumtum
      @yummyumtum Před 2 lety +4

      That would be interesting

  • @tengoku9623
    @tengoku9623 Před rokem +386

    Gravity: "Aight so everything is gonna fall and what comes up must come down"
    Slinkys: "Your tactics confuse and frighten me sir."

  • @technicalteacher6950
    @technicalteacher6950 Před 8 měsíci +1

    Gravity: nothing will fly without wing. BECAUSE OF ME!!!!
    SLINKY: how about me?

  • @funkybear1806
    @funkybear1806 Před rokem

    Elastodynamics.. I think the compressional wave still travels faster than any other wave, such as the rotating/twisting one. The problem is, that this compressional wave (which you could sense by detecting minor vibrations felt at the bottom, since early on) has a waveform, a shape vs time, and this form starts very very mildly with small amplitudes that only become important/high later on and that is what we observe as the progressing contraction of the slinky..

  • @thelightisdarkness9457
    @thelightisdarkness9457 Před 2 lety +654

    This is actually an overlooked error in the matrix that never got fixed

  • @AsianDevilDog86
    @AsianDevilDog86 Před 2 lety +616

    I'm amazed by this, tension is over powering gravity, the energy transfer is easily done in an equation but even understanding the physics behind this still boggles me.

    • @sriramsridhara1763
      @sriramsridhara1763 Před 2 lety +32

      Illusion is overpowering your mind my friend. The centre of mass falls with the just as you expect, ie with 9.8m/s^2

    • @Michael-kp4bd
      @Michael-kp4bd Před 2 lety +72

      @@sriramsridhara1763 it’s still interesting that the bottom is stationary. That’s not trivial nor an illusion. But it is another important/interesting fact to remember, so thanks for that.

    • @krutideepankar5457
      @krutideepankar5457 Před 2 lety +1

      @@sriramsridhara1763 bro then it's center of mass lies above the slinky? It should be somewhere in the middle.

    • @BobbyBlue117
      @BobbyBlue117 Před 2 lety +22

      @@krutideepankar5457 The center of mass is a little bit below the middle of the slinky. If you drop a ball next to that point at the same time, both the ball and the slinky will hit the ground at the same time as well.

    • @krutideepankar5457
      @krutideepankar5457 Před 2 lety +4

      @@BobbyBlue117 but why it starts falling form top?

  • @AlexandarHullRichter
    @AlexandarHullRichter Před rokem

    The rotating wave goes both directions from where the slinky becomes slack. I watched several times to look at the last one, because as the compression wave comes down the slinky, you can see the top of the slinky start to unwind. The top section starts spiraling off to the side right about the same time at the bottom starts to rotate.

  • @ishaangarg4634
    @ishaangarg4634 Před rokem +3

    Gravity has left the chat

  • @CubsYT
    @CubsYT Před 2 lety +757

    "interesting topic but I wonder how he's going to turn it into a 12 minute vide- oh..."

    • @saumyasharma6790
      @saumyasharma6790 Před 2 lety +19

      Lol I thought exactly the same

    • @lelouchvibritannia1788
      @lelouchvibritannia1788 Před 2 lety +40

      He already made 6 videos on this topic 10 years ago. This is just a reupload in short form lol. Way more than 12 minutes hehe. I instantly recognised the suit and the slinky used.

    • @CubsYT
      @CubsYT Před 2 lety +1

      @@lelouchvibritannia1788 oh god 😭

    • @lelouchlibritannia3771
      @lelouchlibritannia3771 Před 2 lety +21

      @@lelouchvibritannia1788 Hi, doppelganger!

    • @maurinhosilva7126
      @maurinhosilva7126 Před 2 lety +1

      vide-oh
      hahah

  • @kickinwinghotboi883
    @kickinwinghotboi883 Před 2 lety +456

    Towards the end when he's looking down at the falling slinky, he looks like a super villain who just won against the hero and is basking in the glory of the hero failing

  • @animaltvstories5165
    @animaltvstories5165 Před 8 měsíci +1

    every action has equal and opposite reaction, theres an elastic force acting against the gravity and it needs to compensate that force before falling under gravity

  • @hatred9427
    @hatred9427 Před rokem +1

    Step 1. Get a kilometer long slinky
    Step 2. Ask a friend to drop it off on top of a building
    Step 3. Break gravity and hang onto the bottom of the slinky

  • @hagerty1952
    @hagerty1952 Před 2 lety +70

    In one of my college physics classes, the professor had a demonstrator showing how linear and rotational motion are coupled in a spring. It was a very long/light spring (essentially a slinky) suspended from the top and with a weight at the bottom. The weight had spikes coming out of it sideways to make easy to see it rotate. He pulled the weight down and we watched bounce up and down, then transition to rotation until the weight was oscillating CW/CCW and then transition back. That was cool until we had to explain it!

    • @martyguild
      @martyguild Před 2 lety +6

      It's called a Wilberforce pendulum... Highly recommend looking into it for anyone else
      The weights are to give it a significant moment of inertia, not for sight. If you can get the moment just perfect (such that the rotational frequency equals the natural oscillating frequency of the spring), the system can achieve a resonance that switches between pure rotation and pure vertical oscillation.

    • @maple22moose44
      @maple22moose44 Před 2 lety +2

      @@martyguild i think they meant the spikes were for sight

    • @abdurrehmanpatel1310
      @abdurrehmanpatel1310 Před 2 lety

      Lol

    • @martyguild
      @martyguild Před 2 lety +4

      @@maple22moose44 indeed they did, but it's not correct. The Wilberforce pendulum, which is what they described, needs to have a mass with an exaggerated moment of inertia in order for the system to work properly. This is accomplished with those "spikes." They are not for visual purpose.
      Source: I own one.

  • @worldsgreatestvideostv1657
    @worldsgreatestvideostv1657 Před 2 lety +270

    Honey where is my suit ?
    Wife: "why do need it"
    Him: "it's time to drop some slinkys obviously"

  • @rohanssbj841
    @rohanssbj841 Před 8 měsíci +1

    Here after RJ sirs class on laws of motion, awe struck 🙆‍♂️

  • @Maou3
    @Maou3 Před 19 dny

    You should look at the acceleration of the top's motion (and calculate it). Since the center of mass of the whole slinky system must accelerate at 9.8m/s², and the unupdated slinky half has an acceleration of 0, the top must accelerate faster (which is easily explained, since both gravity and slinky tension are accelerating it).

  • @lucasthebigl
    @lucasthebigl Před 2 lety +41

    Gravity: *exists*
    Slinkies: well yes but actually no

  • @anormalwanderer
    @anormalwanderer Před 2 lety +1264

    Issac: Gravity is real.
    Slinky: Imma about to end this whole man's career.

    • @syedaslam2856
      @syedaslam2856 Před 2 lety +6

      😂

    • @fredericklehoux7160
      @fredericklehoux7160 Před 2 lety +30

      The tool the church needed to deny more science.

    • @shorin5384
      @shorin5384 Před 2 lety +2

      Isaac

    • @HollowGolem
      @HollowGolem Před 2 lety +9

      Basically, the tension of the higher rungs is countering the force of gravity on the lower part.

    • @flaks109
      @flaks109 Před 2 lety +3

      The slinky obeys physics the tension above and gravity cancels each other's effect.....we had a complete set of problems in physics on this

  • @altacc2318
    @altacc2318 Před rokem

    Derek is a wonderful human being.

  • @nialltracey2599
    @nialltracey2599 Před rokem

    But there's two waves going through, not just one. There's a slight, subtle narrowing of the gap between coils that precedes the "domino" collapse of coils hitting each other, and this seems to be linked to the twist.
    This less dramatic motion is the standard behaviour of a spring on the release of tension, and the reason for the more dramatic "domino" is surely just that the slinky has so little springiness that other factors make the spring equation less significant to the overall motion.

  • @8008es
    @8008es Před 2 lety +913

    Bro when I was little I remember going to Chuck-E-Cheese and winning the really big rainbow slinky they had and that honestly was the best part of my childhood I didn't even care if we were poor that slinky was fun af

    • @jamezason
      @jamezason Před 2 lety +42

      Hopefully you tied a slinky to a ceiling fan as a kid. That’s what we did and it was funny as hell.

    • @TherealbrianUOENO
      @TherealbrianUOENO Před 2 lety +34

      That got dark fast

    • @EnduringCrow
      @EnduringCrow Před 2 lety +32

      Perspective is a helluva thing. I too relish some of the little things from a low income childhood; the memory isn't so much dark as it is an acknowledgement of growth and values, imo.

    • @8008es
      @8008es Před 2 lety +12

      @@EnduringCrow why is what you say exactly my childhood

    • @tonyheaton4941
      @tonyheaton4941 Před 2 lety +3

      " I didn't even care if we were poor that slinky was fun af." So in reality, you weren't poor.

  • @adrianorafacho9706
    @adrianorafacho9706 Před 2 lety +1635

    Imagine a slinky so long that you can see this effect in real time, would be crazy

    • @IlmShadow
      @IlmShadow Před 2 lety +73

      2 minds think alike. was thinking the same thing

    • @shracid7898
      @shracid7898 Před 2 lety +43

      Mythbusters?

    • @randomlygeneratedname7171
      @randomlygeneratedname7171 Před 2 lety +74

      Probably going to get screwed over by the wind. Needs a tower built around it.

    • @orenji2385
      @orenji2385 Před 2 lety +12

      @@randomlygeneratedname7171 or a pit?

    • @trevuamirai5324
      @trevuamirai5324 Před 2 lety +8

      @@IlmShadow two great minds think alike*

  • @Arnav..tech03
    @Arnav..tech03 Před rokem +1

    1st one satisfied me the most😇😇😇

  • @tiberiusalexander6339
    @tiberiusalexander6339 Před 17 dny

    The corallary, which he doesn't explictly mention, is that the top is accelerating much faster than 9.8 m/s² (the acceleration rate of gravity on earth in a vacuum). Not only is it the top of the slinky being pulled down by gravity, it's also being pulled down by tension - the same force which is pulling up on the bottom and preventing it from falling.

    • @peterpumpkineater6928
      @peterpumpkineater6928 Před 14 dny

      So in other words, the mass Centre actually falls at a normal acceleration of 9.81..m/s^2

    • @tiberiusalexander6339
      @tiberiusalexander6339 Před 13 dny

      @@peterpumpkineater6928 yep, that's a valid way of describing it too!

  • @wtfisthiscrap
    @wtfisthiscrap Před 2 lety +3195

    Imagine cutting it in half mid air and throwing the top part away. That way the botton half would stay suspended forever. I love physics!

    • @aaronwilliams8887
      @aaronwilliams8887 Před 2 lety +810

      @Cyclovizioned shhhhh he doesn't know, and it may be better that way.

    • @ispres
      @ispres Před 2 lety +158

      @@aaronwilliams8887 issa joke

    • @aaronwilliams8887
      @aaronwilliams8887 Před 2 lety +306

      @@ispres so is mine mate 😉

    • @user-ht6ql1rn3w
      @user-ht6ql1rn3w Před 2 lety +738

      Everyone thinking this comment is a joke, no, it isnt, the commenter is from a type 2 civilisation where they use this technique to build huge structures without having to build the base first, the reason it doesnt work when we try it is because the slinky needs to be cut in exactly half, down to the last quark, however this isnt possible with our earthian technology

    • @travisscottburber5719
      @travisscottburber5719 Před 2 lety +52

      @@user-ht6ql1rn3w how do you know this?

  • @Ho11is2Ho11ywood
    @Ho11is2Ho11ywood Před 2 lety +518

    2 things I've never accomplished: Finish a tube of chapstick without losing it and keep a slinky from bending

  • @lesliebean4594
    @lesliebean4594 Před rokem

    This is new to me. I found it fascinating, given “gravity” and all. Thank you for sharing!

  • @Black_Kakari
    @Black_Kakari Před 21 dnem +1

    This makes me think of the expansion rate of space VS The Great Attraction

  • @spicymonika12345
    @spicymonika12345 Před 2 lety +1072

    Slinky’s be like: “gravity? never heard of her”

    • @hassanalbazi483
      @hassanalbazi483 Před 2 lety +12

      Lol I was thinking of commenting something kinda like this but then I saw this

    • @usabro6344
      @usabro6344 Před 2 lety +4

      Underrated comments 😂😂

    • @Tin_cannn
      @Tin_cannn Před 2 lety +12

      Thought gravity was just gravity not a gender?

    • @HanazukaNo.2
      @HanazukaNo.2 Před 2 lety +7

      Oh so gravity has a gender now?

    • @Tin_cannn
      @Tin_cannn Před 2 lety +6

      @@HanazukaNo.2 that's what I said, I think they were thinking of mother nature but still it can't have a gender cause gravity is on every planet with an atmosphere I think

  • @sathishgameengineer3048
    @sathishgameengineer3048 Před 2 lety +100

    After this slinky invented, the cartoon physics was born

  • @parthhooda3713
    @parthhooda3713 Před 5 měsíci

    When the slinky os dropped, tension force is removed the same time making the top fall but spring force (-kx) is still there causing the bottom to stay at rest until the force is gone.

  • @neilchristianferry8841
    @neilchristianferry8841 Před 6 měsíci

    that slinky defying physics

  • @s0j0urner15
    @s0j0urner15 Před 2 lety +28

    There are 2 force acting on both the ends of the slinky. 1) Gravitational and 2) Elastic force. The Gravitational and Elastic force acting against each other on the bottom end the slinky and cancelling out each other so instead of going down it is held at the same place while the the top end is accelerated by both gravity and tension through elastic force acting from same direction.

    • @danishakhtar8148
      @danishakhtar8148 Před 2 lety

      But the elastic force depends on the change in configuration of the slinki. So as the slinki starts to move to its original position the eleastic force changes and then both elastic and gravitatiinal forces cant be equal. Then how could the lower end of the slinki be at rest.

    • @adriatikcifliku1346
      @adriatikcifliku1346 Před 2 lety +1

      @@danishakhtar8148 think of it this way: if there was no gravity at all the slinki woud have shrinked at the midle of its body length. But Since there is gravity , the bottom cannot go up , but will remain at rest until the top of the slinki comes down accelerated by gravity and by the elastic force. Now to answer your question, you are right that the elastic force and gravity are not equal anymore but at the top of the slinki, thats why you see it coming down. When you are holding the slinki you are holding it at the first winding but creating the tension in all of its length. When you release it you no longer are equaling the gravity force on the first winding so it falls while braking the tension to the second winding and so on until the whole tesnion is broke down.

    • @danishakhtar8148
      @danishakhtar8148 Před 2 lety

      @@adriatikcifliku1346 i don't got what you are trying to say. Plz elaborate

  • @elijah7430
    @elijah7430 Před 2 lety +559

    Gravitation: **exists**
    Slinky: 👨‍🦯 I 👨‍🦯 don’t 👨‍🦯 think 👨‍🦯 so👨‍🦯

    • @thesoutherncowgirlpoet
      @thesoutherncowgirlpoet Před 2 lety +1

      This comment is underrated 😂😂😂

    • @oldarthurmorgan6319
      @oldarthurmorgan6319 Před 2 lety +5

      Ive never heard anyone call it gravitation good job for being the first to me anyway lol

    • @alimohsin496
      @alimohsin496 Před 2 lety

      @@oldarthurmorgan6319 Lennyyyyyyyy

    • @AndromedaApokalipsy
      @AndromedaApokalipsy Před 2 lety +1

      Slinky: I dont care

    • @PJxpanterx
      @PJxpanterx Před 2 lety

      Gravity doesn't exist, not in the way we think, it's just acceleration, he did a video about it actually.

  • @tanujabudhori
    @tanujabudhori Před 11 měsíci

    When both ladders were falling freely until the left one touched table both have same speed.
    When it touches table some of its length is resting on table so the part of free falling ladder will be less than ladder on right side, hence left one will experience lesser drag force and
    Acceleration will gradually increase slightly.

  • @Bransbow
    @Bransbow Před rokem +4

    "This is the longest slinky I have access to..." Well get more and glue them together!

  • @tastybacon255-baconboy5
    @tastybacon255-baconboy5 Před 2 lety +54

    "We don't need physics where we're going!"- Graystillplays

    • @grygoriiovsianikov6671
      @grygoriiovsianikov6671 Před 2 lety +4

      YES, finally! Someone who watches Gray! I’ve been meaning to find someone who watches him while not on his video!

    • @mortariexe
      @mortariexe Před 2 lety

      @@grygoriiovsianikov6671 I used to, but I got bored of him

    • @Monkey-boy69
      @Monkey-boy69 Před 2 lety +1

      I’m with all of y’all!

    • @Matthew-ue5uf
      @Matthew-ue5uf Před 2 lety

      Yes!! The almighty sadistic masochist god has been spoken off

    • @grygoriiovsianikov6671
      @grygoriiovsianikov6671 Před 2 lety

      @@mortariexe What’s this? You did not respect the god himself?!?! Shame on you!

  • @D_LGND
    @D_LGND Před 2 lety +23

    The top of the slinky: *falls*
    The bottom: “I can wait”

  • @r4ided
    @r4ided Před rokem +1

    Slinkie: *doesnt fall*
    me: I CAN FLY NOW!
    also me: *dead*

  • @rainbowcats19
    @rainbowcats19 Před rokem +1

    Wow! Is it like the bottom one is pulling up to the one above it? So cool thanks for sharing!!

    • @pon1
      @pon1 Před rokem

      Exactly! It is still accelerating down, but is also pulled up by the tension :)

  • @legendaryseal2430
    @legendaryseal2430 Před 2 lety +88

    How to fly: run while throwing slinkys beneath you and jumping onto them

    • @updated_autopsy_report
      @updated_autopsy_report Před 2 lety +9

      the top part would still be falling though

    • @jaffil4026
      @jaffil4026 Před 2 lety +71

      @@updated_autopsy_report throw them upside down stupid

    • @Kitarp06
      @Kitarp06 Před 2 lety +8

      @@jaffil4026 😂😂

    • @mr9293
      @mr9293 Před 2 lety +9

      @@jaffil4026 Albert Einstein! Can I have an autograph???

    • @GHOST-nb7fm
      @GHOST-nb7fm Před 2 lety +3

      @@jaffil4026 no, no, hes got a point

  • @bluefoxf5963
    @bluefoxf5963 Před 2 lety +70

    Center of mass is moving down all the time , it is not necessary for all parts of an object fall constantly.

    • @Jjjjjjjjjjjjjjjjjjj630
      @Jjjjjjjjjjjjjjjjjjj630 Před 2 lety +4

      Thx now l get it

    • @AlexStavi
      @AlexStavi Před 2 lety +1

      and the bottom is falling to, but it keeps pulled up by the strings. I wonder how much the weight of the last ring is decreased

    • @bluefoxf5963
      @bluefoxf5963 Před 2 lety +3

      @@AlexStavi exactly, the bottom is pulled by string accordong the formula : F = k * x

    • @flameify8285
      @flameify8285 Před 2 lety +4

      @@bluefoxf5963 wow. I just learnt this. Good to see the formula used irl

  • @erickleefeld4883
    @erickleefeld4883 Před 3 měsíci

    Hypnotic. The top is still pulling the bottom up from the force of gravity - while the top itself is now falling. (Reminds me of the line from the first Superman movie, when he rescued Lois falling from the top of the Daily Planet building: “Easy, Miss, I’ve got you.” “You’ve got me? Who’s got you?!”)

  • @sasielias3810
    @sasielias3810 Před 24 dny

    The longer sling has more time to enhance the rotation, maybe limiting it by a frame would create a longer non rotational movement?