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
![[실시간] 전철에서 찍힌 기생생물 감염 장면 | 기생수: 더 그레이](http://i.ytimg.com/vi/4nkFvwxGAfA/mqdefault.jpg)
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.
Derek and action lab collab??
I remember this vid
Veritasium and The Action Lab are my favorites science youtube channels😁🙌🏼
someones using reddit
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.
Slinky: **isn’t falling**
Gravity: wait that’s illegal
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.
Due to inertia of rest
@@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
Exactly
@@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.
“This is the longest slinky i had access to” get this man access to the longer, forbidden dark slinkys
Lmfao 🤣
I'm gay
@@cynicalclusterfuck5605 how to not start a conversation 101 lol
🤣
Came here to say something like this lmfao
Said it like it was some controlled item
"It is unlawful to possess a slinky that stretches longer than 10ft without a permit"
3030: "and this is how we invented time machine"
Slinkies start to glitch in matrix
3030 they will say it was an underrated comment
It was an underrated comment.
@@dow_izz hey dude, how is it there in 2030?!
@@uygarozturk1326 (I answered, but you have to wait until 3035 to get this CZcams notification) sorry dude🥲
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
I wish there would be a video seeing something like that
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
Your answer is in 2nd one. It will behave like that.
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.
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?
It's like in cartoons when the character runs off a cliff, but is still running on the spot and falls seconds later.
Until and unless he sees that there's nothing under his feet.
@@kantoumanjigang Then wave at the camera.
@@kantoumanjigang schrodingers gravity
Cuz if u look down, that's when the gravity strikes
Underated af 😂
Crazy how the top of a slinky can get beneath the bottom before the bottom starts moving down
Just an illusion, the bottom is just moving up at the same rate as it is falling.
@@IdgaradLyracant well that's equivalent to the bottom isn't moving lol
@@IdgaradLyracant that’s great, but it doesn’t contradict what I said, the top still reaches below the bottom
@@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.
haxx
This is the most counterintuitive thing I've ever seen.
Gravity lagged in a second
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
The slinky is just like a Cartoon character when He sees that there's nothing down beneath him, He falls.
Yeah exactly 😁
or are all cartoon characters just slinkys in disguise? is it all just a great conspiracy?
Wile E. Coyote was right! 🤣
🤣🤣🤣
this is gold
"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
I'm sure the flat earth community is hard at work to uncover these hidden slinkys.
@@rafetizer we are trying but we haven't uncovered anything just yet, I think they are in the same room as the real globes.
Was it the one from questacon in Canberra Australia?? I think I had the same one growing up lol
some objects are just too powerful for mere mortals to wield
@Peaker’s Lab or rather, *not* begging
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.
Same thing the earth does
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 😊
@@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 .
I am waiting for you getting access to the Black Project Slinkies! 😜🙈
“That is the longest slinky I have access to.”
The question is, what slinkies do you NOT have access to?!
NASA or Area-51 kind, probably.
Might as well SCP.
„Sir, this slinky is above your clearance level.”
More like him saying he didn't have access Orrrrr A means to get a slinky longer than this 😆😅
@@berlinflight_tv 🤣
The one you see connecting a truck and a container
I think this proves it. Slinkies are magic.
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
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
🤓
@@geronimo9193 babababab. i don’t hear you. slinky's are magic
nope just physics
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
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.
Thank you epic science man
Great comment!
Same way trade centre 7 collapsed from an office fire.
@Dont Read My Channel Banner 😂
Ur welcome
@@australianoutback very well said brother, the government has some unbelievable conspiracy theories
Actually this was a bug added back in the Matrix’s 5.14 update but never removed due to the engines mechanics
Why would they design it like that? Its clear that they only care about the money smh.
@@cc-oo7vn 😂😂🤣🤣
@@cc-oo7vn true man they greedy af
@@cc-oo7vn so rigged
Absolutely love this
The real question is: is the centre of mass falling at the same speed as if u dropped the slinky uncompressed
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.
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.
Now I’m gonna think about this every time I see a slinky
Slinky: **defeats gravity**
Newton: "son of a bitch!"
@DerrickPack1998 by being smaller than Planck constant?
@@bait5257 OMG so small🤣🤣
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!"
@@bait5257 that was brutal.
@@bait5257 Oh! lmao
gravity: "exists"
slinky: you might have to wait for this to happen
Ping: 1000
@@Panda-24 no no ping:1000000000000
It happens due to inertia of rest
A man once said.. "Do you belive in gravity?"
Gravity is not a force!
Gravity: "I am the law!"
Slinky: " im about to end this mans whole career!
I’ve seen this so many times but it’s just so cool everytime
You should totally make a ''Veritasium shorts'' and just post the experiment parts of videos there!!! just a thought :) would be cool
+
Up vote ^
If youtube would assure us that the shorts feature is a permanent installation then this would be a great idea.
Verishortium
@@YouGloomy I'm danish :)
Gravity: I am inevitable
Slinky: and I, am slinky
Gravity: nothing will fly without wing. BECAUSE OF ME!!!!
SLINKY: how about me?
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!
Newton: “*The force of gravity affects everything with mass in the universe*”
Slinky: “And who decided that?”
Escanor🔥🔥
9/11 was an inside job
I get the joke but I needed to say this, the spring force balances the weight
@@sambhabgiri573 . It wouldn’t work without gravity.
@@robertt9342 indeed
I love how he's dressed up just to drop a slinky
gotta get fancy so the viewers see you in slow motion
Issac Newton be like: “impossible…”
Studying for physics and this actually helps with understanding longitudinal wave compared to transverse wave. Thanks!!!!
"I wish I could fly :l"
Slinkies: *Hello there.*
general slinky
@@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%
*Becomes Slinky*
@@adrriannm I came here to make a funny comment and this just made me spit out my drink lmfao 😂
oh hi um what are you doing?
Top slinky: we droppin boiiisss
Bottom slinky: WE DROPPED?!
Just like internet explorer
Just like Mc bedrock
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.
@CZcams official✔ gravity worked ... The centre of mass of slinky was always in a free fall accelerating at 9.8 m/s^2 ....
@@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.
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.
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.
It literally levitates for a period of time, that’s sick
That's slink
@@rayaanishfaqgaming leave
@@aPumpkn no
Can we find a way to glitch this to fly or levitate
No, they patched it last year
@@NOTZeroBlank damn
I got 5 likes with saying lol so i edit this comment that
First things first
I'ma say all the words inside my head
I'm fired up and tired of the way that things have been, oh-ooh
The way that things have been, oh-ooh
Second thing second
Don't you tell me what you think that I could be
I'm the one at the sail, I'm the master of my sea, oh-ooh
The master of my sea, oh-ooh
I was broken from a young age
Taking my sulking to the masses
Writing my poems for the few
That look at me, took to me, shook to me, feeling me
Singing from heartache from the pain
Taking my message from the veins
Speaking my lesson from the brain
Seeing the beauty through the...
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
First things first
Can you imagine what's about to happen?
It's Weezy the Dragon, I link with the Dragons
And we gon' get ratchet, no need for imaginin'
This is what's happenin'
Second thing second, I reckon immaculate
Sound about accurate
I know that strength, it don't come, don't come without strategy
I know the sweet, it don't come without cavities
I know the passages come with some traffic
I start with from the basement, end up in the attic
And third thing third
Whoever call me out, they simply can't count
Let's get mathematic, I'm up in this, huh
Is you a believer?
I get a unicorn out of a zebra
I wear my uniform like a tuxedo
This dragon don't hold his breath, don't need no breather
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
I know the beauty don't come without hurt
Hol' up, hol' up, last thing last
I know that Tunechi don't come without Wayne
I know that losin' don't come without game
I know that glory don't come without...
Don't come without...
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
Last things last
By the grace of fire and flames
You're the face of the future, the blood in my veins, oh-ooh
The blood in my veins, oh-ooh
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
Pecehergeodfe
Soviet TT pistol manufactured in 1937
The most common type of pistol used in the contemporary era is the semi-automatic pistol, while the older single-shot and manual repeating pistols are now rarely seen and used primarily for nostalgic hunting and historical reenactment, and the fully automatic machine pistols are uncommon in civilian usage due to generally poor recoil-controllability and strict laws and regulations governing their manufacture and sale.:full_moon: :waning_gibbous_moon: :last_quarter_moon: :waning_crescent_moon: :waxing_crescent_moon: :first_quarter_moon: :waxing_gibbous_moon:
@@NOTZeroBlank if it's only a hotfix it's fine. You can just turn off the wifi before waking up
@@ghostly360 Actually, i have been developing a mod that adds this and more so wait for more!
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?!”)
The slinky is like a really obedient kid, it waits for you to come back!
When should you wash a stinky slinky?
During spring cleaning
nice one
i understand english but it's not my native language, can you explain this joke to me pls?
Silky, and not stretchy at all
You are a real master of fun
@@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.
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
This has to be humanities next mega project screw the MSG sphere
I feel like that’s a dangerous idea.
Lol we would need a huge helicopter 🚁
@@highq9039 it's a slinky bruh what's it gonna do?
Do you know what wind is?
Pretty frickin cool, as always.
Your channel never ceases to amaze me
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).
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!
@@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
@@oldacc_ihatebrickplanet12 haha ok im not a scientist just had a random thought
@@anonymoususer855 ok
So 911 was an inside job then
That would be interesting
“The longest slinky I had access to”
Lol he makes it sound like it’s confidential government tech
It implies the existence of longer slinky he DID NOT have access to.
@@izayus11 😳
@@thed4rkknight740 rumor says the longest one is in the pope basement
@@izayus11 noshit
the giant slinky is confidential government tech
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
This will definitely be used in the future to create something like a hoverboard
Gravity exists…
Slinky: “eeeh… I don’t really feel like it”
🤣🤣good one
I was gonna say the bottom of the slinky be like uhm that’s not how gravity works
Do you believe in gravity?
Actually just make an fbd diagram you'll understand whats happening
It's crazy because people actually believe there's no gravity. But if there was no gravity then how would we all exist?
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.
So in other words, the mass Centre actually falls at a normal acceleration of 9.81..m/s^2
@@peterpumpkineater6928 yep, that's a valid way of describing it too!
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.
We call it the "Wile E. Coyote Effect"
Ah cool !
ACME
Be brave. Stay wild.
Gravity: FINALLY A WORTHY OPPONENT! OUR BATTLE SHALL BE LEGENDARY!
cartoon logic: are you sure about that?
Flat earthers and their disbelief in gravity is hilarious
Magnets are stronger than gravity
@@royalcod7159 So?? What does this have to do with the actual comment?
Not as worth is Indian movie protagonists
20 missed calls from laws of physics
Me wondering what happens when you don’t drop the top
Gravity: sh¡t
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!
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.
@@martyguild i think they meant the spikes were for sight
Lol
@@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.
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.
Illusion is overpowering your mind my friend. The centre of mass falls with the just as you expect, ie with 9.8m/s^2
@@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.
@@sriramsridhara1763 bro then it's center of mass lies above the slinky? It should be somewhere in the middle.
@@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.
@@BobbyBlue117 but why it starts falling form top?
We need more short videos like this 👍👍
The reason is that last portion of slinky also apply the force in the opposite of gravity and stronger then gravity.
This is actually an overlooked error in the matrix that never got fixed
Nice
Na gravity is a lie
Slinky bug
It's not a bug, it's a feature.
I agree
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
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
@@DekuStickGamer YES
@@DekuStickGamer that is completely impossible and wrong.
@@Alexander-vs2ee shhhhhhhhhhh. This is the internet. We dont say things like that
@@Alexander-vs2ee you must be boring as hell in parties, which is also the reason that you aren't invited to them. 😐
I think what's happening is that gravity is definitely acting on the slinky as a whole. But the tension in the it due to it's stretched state causes the lower most coil to oppose gravity, thus it too accelerates but negligibly and the uppermost coil speedily accelerates coz of heavy tension and gravity pulling it in the same direction downwards. So if we consider this entire slinky to be a system, the tension generated is the internal forces, while the only external force is the gravity, so as per the Newton's law, it's center of mass must accelerate at 9.8 m/s^2. And as we can see the vector sum of all linear accelerations of each coil of slinky would approximate to "g".
scientists: it is impossible to make an object float
slinky:
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
Hopefully you tied a slinky to a ceiling fan as a kid. That’s what we did and it was funny as hell.
That got dark fast
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.
@@EnduringCrow why is what you say exactly my childhood
" I didn't even care if we were poor that slinky was fun af." So in reality, you weren't poor.
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
True lol, good comment
"Long live the king.."
tu mama says oink
haha make me laf
But then the hero pulls the 'POWER OF FRIENDSHIP' deus ex machina out their ass and wins.
Here after RJ sirs class on laws of motion, awe struck 🙆♂️
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..
Gravity: "Aight so everything is gonna fall and what comes up must come down"
Slinkys: "Your tactics confuse and frighten me sir."
Slinkys was gag
😂
"interesting topic but I wonder how he's going to turn it into a 12 minute vide- oh..."
Lol I thought exactly the same
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.
@@lelouchvibritannia1788 oh god 😭
@@lelouchvibritannia1788 Hi, doppelganger!
vide-oh
hahah
Gravity has left the chat
Derek is a wonderful human being.
Imagine a slinky so long that you can see this effect in real time, would be crazy
2 minds think alike. was thinking the same thing
Mythbusters?
Probably going to get screwed over by the wind. Needs a tower built around it.
@@randomlygeneratedname7171 or a pit?
@@IlmShadow two great minds think alike*
Honey where is my suit ?
Wife: "why do need it"
Him: "it's time to drop some slinkys obviously"
"It's time to drop some stinkys obviously
SUPER suit
I didn't even notice the dude was in a suit🤣
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
This doesn’t violate any laws of gravity because the tensile forces of the spring make the moving section of the slinky accelerate faster than 9.81m/s/s. When you take into account the added acceleration of the moving part, the Average acceleration is 9.81.
Draw your free body diagram and work it out for yourself.
Gravity: *exists*
Slinkies: well yes but actually no
2 things I've never accomplished: Finish a tube of chapstick without losing it and keep a slinky from bending
I love this
Also using up an eraser without losing it
Chef's kiss i love your comment 😘😌💅
I’ve kept a slinky from bending
@Hollis2Hollywood Same
This is new to me. I found it fascinating, given “gravity” and all. Thank you for sharing!
What is amazing is that, although some people believe the bottom deffies gravity, the mass center of the slinky is moving with gravity acceleration, as would a perfectly compressed slinky in free fall.
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!
@Cyclovizioned shhhhh he doesn't know, and it may be better that way.
@@aaronwilliams8887 issa joke
@@ispres so is mine mate 😉
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
@@user-ht6ql1rn3w how do you know this?
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.
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.
@@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.
@@adriatikcifliku1346 i don't got what you are trying to say. Plz elaborate
gravity: fall
slinky: instructions unclear, collapsing.
Slinky: my goals are beyond all of your understanding
After this slinky invented, the cartoon physics was born
Maybe after that
@@jennie-sz9vp maybe it’s a joke
How to fly: run while throwing slinkys beneath you and jumping onto them
the top part would still be falling though
@@updated_autopsy_report throw them upside down stupid
@@jaffil4026 😂😂
@@jaffil4026 Albert Einstein! Can I have an autograph???
@@jaffil4026 no, no, hes got a point
Gravity: *exists*
Slinkys: my power is beyond your understanding.
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.
Issac: Gravity is real.
Slinky: Imma about to end this whole man's career.
😂
The tool the church needed to deny more science.
Isaac
Basically, the tension of the higher rungs is countering the force of gravity on the lower part.
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
Center of mass is moving down all the time , it is not necessary for all parts of an object fall constantly.
Thx now l get it
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
@@AlexStavi exactly, the bottom is pulled by string accordong the formula : F = k * x
@@bluefoxf5963 wow. I just learnt this. Good to see the formula used irl
actually what's really happening is, when the slinky is stretched it has force built up inside of it. That force needs to go somewhere. So, when you drop the slinky, the bottom starts the force up, as if it would close like it normally would. The problem is, at the same time the force is closing the slinky, gravity is pulling it down. It gives the illusion of not moving. If you did this experiment inside a zero G vacuum, both end would meet in the middle. In zero G, the middle would stay stationary, until both ends completely retracted. Then, the force would direct the slinky in a direction. Give or take some distance, based on build quality.
Also, its only being stretched by its own weight in this video. So the force would be calculated by its own weight/length.
Thanks for the info. It's something that never occurred to me, but I'm happy to have the knowledge, if someone asks me.
"We don't need physics where we're going!"- Graystillplays
YES, finally! Someone who watches Gray! I’ve been meaning to find someone who watches him while not on his video!
@@grygoriiovsianikov6671 I used to, but I got bored of him
I’m with all of y’all!
Yes!! The almighty sadistic masochist god has been spoken off
@@mortariexe What’s this? You did not respect the god himself?!?! Shame on you!
This is because the initially when you hold the slinky from one end and other end exert a gravitational force . According to Newtowns third law "every action has equal and opposite reaction" so the tension force create in slinky forcing upward against gravity . When you drop the first end , it fall down but due to "innertia of rest" bottom end remain in rest until the all the tension force stored in the slinky is not released.
Loved Ur Explanation...
😀😀
I was going through the comments to find out why this happened...
And U Pleased Me...
Thank U Very Much....
😃😃😃
For simple minded people like me it doesn’t drop cuz it’s already stretched and would need something to pull of from the bottom to stretch more therefore it needs the top to push it down after it uncompresses so it can push it down
So 911 was an inside job then
Great explaination😲👏🏻👏🏻👏🏻
I don't understand the part of "the innertia of the rest", do you mean that until the wave didn't reach the bottom of the slinky, the impulse can't be transmitted?
I’ve always wondered how the coyote remain stationary in the air above the cliff when chasing the roadrunner for a few seconds before falling. Slinky science. Finally answered. Thank you!
"This is the longest slinky I have access to..." Well get more and glue them together!
The force that stretched the slinky under its own weight is the same force that collapses the slinky as it falls, gravitation.
So the bottom of the slinky is, in a way, collapsing upwards during that time.
Still didn't expect that!
Cool video.
Thanks, this explanation easy to understand.
The weight of the entire slinky should still fall as it collapses, there should still be no reason for it to hold still without at least collapsing at a faster rate while it as a whole rises in speed downward. Time to get a slinky and see for myself I guess.
@@mr.davemaeen8136 the restoring force(due to potential energy stored by virtue of a stretched slinky) balances the weight of the slinky at the lowest ring ig.
@@hrimonrakshit6840 that's really a trip. My first thought is it would do just the opposite haha.
@@mr.davemaeen8136 You are correct that the center of mass of the slinky falls due to gravity.
Slinky’s be like: “gravity? never heard of her”
Lol I was thinking of commenting something kinda like this but then I saw this
Underrated comments 😂😂
Thought gravity was just gravity not a gender?
Oh so gravity has a gender now?
@@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
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.
The explanation I learned for this is that even though the sling isn’t falling towards the ground, it’s center of gravity is, as it moves downwards with the top contracting.