Understanding Universal law of Gravitation!

Sdílet
Vložit
  • čas přidán 1. 06. 2024
  • Let's understand what is universal law of gravitation and how Sir Isaac Newton discovered it in detail.

Komentáře • 894

  • @nabajitneetaspirant
    @nabajitneetaspirant Před rokem +100

    This video has really motivated me to be more focused on physics as our teacher is going to start laws of motion chapter.

  • @pascalaylay5059
    @pascalaylay5059 Před 20 dny +2

    This video is really beneficial 👍👍👍👍👍👍

  • @AbC-bj3gs
    @AbC-bj3gs Před rokem +5

    marvellous animation and visual for grasping concepts so easily.

  • @ashutoshsuman9473
    @ashutoshsuman9473 Před 2 lety +4

    Helpful visual.🙏🤩

  • @Physics_Hogwarts
    @Physics_Hogwarts Před rokem +4

    What a great work sir. Appreciate it very much. Please ...make more videos like this ..

  • @ajinkyaadake9149
    @ajinkyaadake9149 Před rokem +11

    Sir I request you to make a detailed video on all the Laws of Motion and Laws of Inertia of Sir Issac Newton with detailed explanation with examples

  • @aijazsirchemistry9851
    @aijazsirchemistry9851 Před rokem +1

    Outstanding sir.

  • @craigfordyce4645
    @craigfordyce4645 Před rokem +1

    Excellent video!

  • @KenzoArts
    @KenzoArts Před 2 lety +63

    Your videos explain very well concepts in more clear than most channel on CZcams.
    Keep up your work mate!

    • @PeterPete
      @PeterPete Před 10 měsíci +1

      yup the universal law of gravitation is only an IDEA!

    • @MathieusTheWalkingWitness
      @MathieusTheWalkingWitness Před 7 měsíci

      ​@@PeterPetenot to mention a helium balloon debunks the IDEA that mass attracts mass...

    • @PeterPete
      @PeterPete Před 7 měsíci

      Absolutely, just a simple helium balloon discredits the entire theory of gravity. Helium or hydrogen weren't even discovered when Newton came up with his flawed theory of gravity 😲@@MathieusTheWalkingWitness

    • @thomasblair4468
      @thomasblair4468 Před 5 měsíci

      In these experiments how are the different forms of magnesium controlled for?

  • @faris9369
    @faris9369 Před 2 lety +2

    Thank you .Awesome video😀

  • @apscafe
    @apscafe Před rokem +1

    Wonderful explanation

  • @eagle9977
    @eagle9977 Před rokem

    Understand well... thank you 🍃

  • @taniyaferdinandez6576

    Excellent video....

  • @AjaySohail
    @AjaySohail Před rokem +1

    Good informative video 👍🏻

  • @omicron296
    @omicron296 Před rokem

    Muito bom o seu vídeo! 😀

  • @betanapallisandeepra
    @betanapallisandeepra Před rokem +2

    Good explanation and animations 😊

  • @surendrakverma555
    @surendrakverma555 Před rokem

    Very good. Thanks 🙏🙏🙏🙏

  • @abtahiazwad221
    @abtahiazwad221 Před 2 lety +6

    thanks for the video

  • @user-oz3hr6yb5l
    @user-oz3hr6yb5l Před 4 měsíci +2

    Just Wow. I have never thought physics like this.❤

  • @sriharigummadi8174
    @sriharigummadi8174 Před rokem +1

    Very nice and great animation

  • @MarioDallaRiva
    @MarioDallaRiva Před 2 lety +1

    Awesome! 👏🏻👏🏻

  • @scottstevens7253
    @scottstevens7253 Před rokem +4

    Upsetting that the video had to come to an end as you did a great job putting it together

  • @jorfjorf2910
    @jorfjorf2910 Před 7 měsíci

    This video wasu very important to me it really helped me to understand this lesson very well

  • @thinkwithaman1799
    @thinkwithaman1799 Před 2 lety +1

    you are a great explainer dude

  • @rijojohny9784
    @rijojohny9784 Před rokem

    Great effort❤️❤️

  • @royalemperor9007
    @royalemperor9007 Před 8 měsíci +4

    wonderful video which was explained clearly with good animations. Thank you ...

    • @MathieusTheWalkingWitness
      @MathieusTheWalkingWitness Před 7 měsíci

      Lol Newton proposed "what goes up must come down" and "mass attracts mass" around 1666... Helium (has mass and NEVER goes down) was discovered in 1868...
      There is no universal law of gravity attraction, cause a simple gas such as helium, debunks that allegedly claimes "law"... i highly suggest you go watch Richard Feynman lecture about how laws of nature are discovered...
      "If it (your theory) disagrees with experiment, it (your theory) is wrong"
      --Richard Feynman
      Once again, dropping a helium balloon (both have mass) disagrees with the proposal of "mass attracts mass"...

  • @AvikGupta-ch7oh
    @AvikGupta-ch7oh Před 5 měsíci

    Great sir

  • @aparnachaurasia5533
    @aparnachaurasia5533 Před rokem +7

    Such an amazing explanation. Loved it✨

    • @syedkamranali3219
      @syedkamranali3219 Před 5 měsíci

      Newtons The falling of the apple
      hinted at the force of attraction. And the thought of the
      attracter came after having seen the apple fallen on the
      ground. So the idea came to the mind that the earth has got
      the power of attraction. And when he saw the apple coming
      down, he realised the force of repulsion. And as a matter of
      fact any one of them is quite sufficient to bring it down.
      Then, what for two are required? IN “Hadayiq-un-Najum,
      it is said: If a bullet is fired on the equal level it will go in
      straight line, following its own nature. This hints at the
      force of repulsion.

  • @roshanithakare9786
    @roshanithakare9786 Před rokem

    Keep making this kind of videos.

  • @chetanrahi1000
    @chetanrahi1000 Před rokem

    Nice explanation please we need more

  • @zeyuik
    @zeyuik Před 2 lety +1

    Thank you sir!

  • @pritisaini8856
    @pritisaini8856 Před rokem +2

    Wow😱😲 manificent explanation Sir ji 🌻💐💝🤓⭐⭐⭐⭐⭐💯💯😊✌️ and thank you Sir ji for make a this awesome videos 🙏👍😊

  • @kebabsharif9627
    @kebabsharif9627 Před rokem +3

    Please make a tutorial to explain how to make this animation. May i know the name of software used for making this animation.thank you.

  • @ankrah-twumasisebastian3226

    This absolutely beautiful

  • @seeker6369
    @seeker6369 Před rokem

    Super explanation

  • @highschool168
    @highschool168 Před 10 měsíci

    Very nice 👍👍👍👍👍

  • @shamimafarjana6974
    @shamimafarjana6974 Před 7 měsíci

    Wonderful

  • @tsemgonthar3958
    @tsemgonthar3958 Před rokem +4

    Hi Sabins,
    can I get your permission to use your wonderful video in my teaching Newton's gravitaiotnal law to my Tibetan viewers? I will surely mention copyright and your youtube link thought the viewers might not be able to follow the links as CZcams is blocked in CHINA.

  • @CandyLemon36
    @CandyLemon36 Před 6 měsíci

    I'm inspired by this content. A similar book I read served as a transformational guide. "Galaxies United" by Olivia Whitestone

  • @digitech5205
    @digitech5205 Před 2 lety +1

    Best video

  • @funandlearning1312
    @funandlearning1312 Před 11 měsíci

    Good illustration

  • @conductivemeteorite
    @conductivemeteorite Před rokem

    Amazing

  • @littletips6927
    @littletips6927 Před rokem

    Wow.Thanks a lot sir.What a great explanation. 😊

  • @PrabhakarKumar
    @PrabhakarKumar Před 17 dny

    Interesting 😎

  • @slehar
    @slehar Před rokem

    Intriguing! Mega ultra!

  • @agustinvisini989
    @agustinvisini989 Před rokem +1

    Terrific.

  • @mskEduTech
    @mskEduTech Před rokem +4

    I have seen lots videos but this one was really good 👍👍

    • @WasteNotWizard7742
      @WasteNotWizard7742 Před rokem

      Alrighty

    • @MathieusTheWalkingWitness
      @MathieusTheWalkingWitness Před 7 měsíci

      Lol Newton proposed "what goes up must come down" and "mass attracts mass" around 1666... Helium (has mass and NEVER goes down) was discovered in 1868...
      There is no universal law of gravity attraction, cause a simple gas such as helium, debunks that allegedly claimes "law"... i highly suggest you go watch Richard Feynman lecture about how laws of nature are discovered...
      "If it (your theory) disagrees with experiment, it (your theory) is wrong"
      --Richard Feynman
      Once again, dropping a helium balloon (both have mass) disagrees with the proposal of "mass attracts mass"...

  • @infinitum5425
    @infinitum5425 Před 11 měsíci +1

    what happens if you place the large orbs on the same side of the smaller suspended orbs - they'd 'cancel' each other out ? Just curious ..

  • @aimanfatima1493
    @aimanfatima1493 Před 10 měsíci

    Thanks sir....

  • @mileenlaghate1842
    @mileenlaghate1842 Před 9 měsíci

    Salute sir

  • @AsmaaAhmed-vc4hg
    @AsmaaAhmed-vc4hg Před 2 měsíci

    Thank you so much🤩

  • @user-sp1xr2pd9i
    @user-sp1xr2pd9i Před 2 měsíci

    Thank you ❤❤

  • @n.y.c.freddy
    @n.y.c.freddy Před rokem

    ** SABINS ** .,. Sabins .,. Simply GREAT! Thank YOU!

  • @tenkhosiii
    @tenkhosiii Před 2 lety

    Thank you.

  • @zahidbutt8977
    @zahidbutt8977 Před 7 měsíci

    This vedio tell us more than our teacher tell us😊😊

  • @chinu2323
    @chinu2323 Před 2 lety +15

    This was really awesome Sabin Sir
    I thank you for making such interesting and useful videos
    Hope you will once explain working of a fan and working of TV (all types)
    Regards

  • @liamjacobojuliano248
    @liamjacobojuliano248 Před 2 měsíci

    Nice❤❤❤

  • @thomasblair4468
    @thomasblair4468 Před 5 měsíci +2

    In these experiments how are the different forms of magnetism controlled for?

  • @holgerjrgensen2166
    @holgerjrgensen2166 Před 8 měsíci +1

    The Life-Desire is the Force or Motor of Life.
    In direct Extension We have Will (Life-Side)
    and Gravity (Stuff-Side)
    By our Will, We do Balance Gravity of Earth,
    with our own, when We lift the cup.
    Tide is caused by the slightly Slinger of Earths rotation.
    So, Will is Life-Power,
    Gravity is Stuff-Power.

  • @DontMindRick
    @DontMindRick Před rokem

    Finally, thanks to this video i can finally stop floating and walk on the ground for the first time in my life

  • @techtimes1985
    @techtimes1985 Před rokem

    Wow, what software have you used to make this animation?

  • @user-xo4bu1ul2k
    @user-xo4bu1ul2k Před 4 měsíci

    eye cathing video❤

  • @Brassmonger
    @Brassmonger Před rokem

    How much time it takes for the small ball to touch the big ball?

  • @solapowsj25
    @solapowsj25 Před rokem +3

    The lever using a horizontal scale is replaced by ripples from a very high energy top quark in the nucleus of each atom. Rest is identical.
    Laws to keep are that a convex interactive surface is positive ➕. A concave interactive surface is negative. Each time waves cut, there is an attractive force bringing the bodies together due to the negative surface interaction. Photons are positive in interaction causing displacement, dispersion and expansion.

  • @jimhya2588
    @jimhya2588 Před rokem

    Thank you

  • @M1551NGN0
    @M1551NGN0 Před rokem +23

    The experiment shown in the beginning of the video was conducted by Henry Cavendish to calculate the value of Gravitational constant, which is 6.67×10^-11 Nm²/kg².
    Also, if the effect of gravity on smaller bodies is able to be shown just by suspending two small balls on a horizontal bar, then why isn't the effect of gravity shown elsewhere like this?

    • @noredem
      @noredem Před rokem +6

      It's difficult to show the effect of gravity on smaller objects else where because of opposing forces like gravitational pull from other objects, friction, air resistance and much more other counter acting forces. "That's why Cavendish suspended the balls on a horizontal bar to eliminate friction and put it in a wooden box to try and eliminate other forces as well. We haven't done this elsewhere because it's difficult to eliminate the other opposing forces perfectly.

    • @M1551NGN0
      @M1551NGN0 Před rokem +6

      @@noredem that's a nice explanation of the experiment, well done and thank you!

    • @ovidius2000
      @ovidius2000 Před rokem +6

      @@noredem SoCavendish'sExperimentCannotBeReplicated?ThisIsTheSameStuffLike:WeWentToTheMoonButNowWeCannotGoAnymore.

    • @rstevewarmorycom
      @rstevewarmorycom Před rokem

      @@ovidius2000
      That's erroneous and stupid. I myself in my physics degree did the Cavendish experiment, as every physics student does. It has been redone thousands if not millions of times. You can't go to the moon without a Saturn V, and we made only about 20 of them and used them all. Now we are building new rockets to do it again. Ditch your stupid handle and go study Science!!

    • @PeterPete
      @PeterPete Před 11 měsíci +3

      Cavendish recognised that heat is a factor to cause his torsion balance to move. Imo nobody can achieve thermal equilibrium within their torsion balance because one cannot determine that the centre of a large lead ball is at the same temperature as the centre of a small lead ball. The same can be said with all other pieces of the apparatus especially if they are made with different materials, e.g. wood for the beam.
      Observing the torsion balance swing around slightly and putting the causation of that movement down to gravitational attraction is a great idea but one has to prove it is because of gravitational attraction and not just attraction of masses due to differentials in heat or perhaps some other unknown explanation.
      All Cavendish proved was that he had a vivid imagination!!! That's unsurprising though given he had lots of money, never married or had children, ate the same meal every day for most of his life and didn't like his portrait sketched or painted.

  • @Naughty-jq2gg
    @Naughty-jq2gg Před rokem

    Thank❤ you🌹

  • @konglink3359
    @konglink3359 Před 6 měsíci

    How did henry calculated it, pls i really want to know

  • @domenicobaceticban968

    Tudo muito bem explicado. Mas que tipo de força é a gravidade??? Elétrica, Magnética, nuclear, mecânica, alguem sabe dizer??????? Nem Isaac newton saberia.

  • @KartikPatel-nt4ff
    @KartikPatel-nt4ff Před měsícem

    😮😅😅😅😅😅😅😅😅😅😅😅😅😅well information good show you 😅😅

  • @user-rj1hz3uw3l
    @user-rj1hz3uw3l Před 11 měsíci

    Can you plz explain the friction force

  • @shreya_tomar__
    @shreya_tomar__ Před 5 měsíci

    Is this use for gravity presentation

  • @sabeenzahra95
    @sabeenzahra95 Před rokem

    By the way nice video 😊

  • @muhammadsiddiqui2244
    @muhammadsiddiqui2244 Před 2 lety +1

    And the beauty that Coloumb's Electrostatic force is exact analogous to gravitational force

  • @SeidellNorbel
    @SeidellNorbel Před rokem +1

    Wonder if any tried the hanging ball test in a vacuum chamber to take out the "air pressure" factor that many people that deny gravity or the earth's rotation use as a red herring,

  • @ananthumohan2876
    @ananthumohan2876 Před rokem +1

    Theory of relativity 🔥

  • @tswapna2697
    @tswapna2697 Před rokem

    Hats off to you. What an excellent explanation. It helped my son very clearly. Please kindly do many more videos

  • @muhammadislam5138
    @muhammadislam5138 Před 9 měsíci +1

    Also sir Issac Newton never have said that of the central attraction but someone else of Apple Force.

  • @zakirhussain-js9ku
    @zakirhussain-js9ku Před rokem

    Gravitational field & energy contained in gravitational field exist in space around & b/w mass bearing objects. What is source of gravitational energy? Does gravitational field borrow its energy from space since there is nothing else there except Space. Is space an energy field?

  • @Sudesh_Wickramasooriya

    In general, the simplest form of object positioning around another object in space is spheroidal positioning. Just like Electrons around nuclear in atom , But why do the planets in the solar system form a disc around the sun?

  • @purushothamch2202
    @purushothamch2202 Před rokem

    I haven't a doubt....!! You said that every body attract each other due to force of attarction but where does this force come from a Ideal body....?
    Waiting for the Answer :)

  • @zakirhussain-js9ku
    @zakirhussain-js9ku Před rokem

    Gravitational field appears in space. Is it part of space or Mass which induces it.

  • @MdImran-zi9te
    @MdImran-zi9te Před rokem

    Thanks

  • @saveearth9816
    @saveearth9816 Před rokem +3

    Very good explanation
    I have a question :- we know that if we have 3 unknown values in an equation we need 3 equations to solve the problem & find the solution..... I will clearify the question the 3 unknown values in Newton's gravitational law (f=G×m1. m2 /r2) are the G gravitational constant.... m2 mass of the earth.... And r the earth radius
    So if we put 3 different weights (m1) three times & by computation of the gravitational force (f) each time and because we know (m1) so we can figure out the other 3 values
    (G.... m2.... r)
    Is my English good?

    • @carultch
      @carultch Před rokem +2

      Your English is good enough for me to understand approximately what you have in mind, but your question is incomplete. Think carefully about what information you know, and what information you want to find. Without knowing specifically what information is given, I can't help you.

    • @IhabFahmy
      @IhabFahmy Před rokem

      No, because every time you change m1, then F also changes... and you thus end up with a new value for the equation.

    • @danieljust295
      @danieljust295 Před rokem

      Don’t forget planets above us, they also should impact any object on the Earth.

  • @mohamedaazi4704
    @mohamedaazi4704 Před rokem

    How long to wait for the experience described in the beginning

  • @rajchoudhary4349
    @rajchoudhary4349 Před rokem

    Nice narration..!! Apple pulls the earth.. quite a theory

    • @HarshaHarshG-tb3pu
      @HarshaHarshG-tb3pu Před rokem +1

      Not only a theory, that's the thing how actually things work....
      According to Newton's 2nd law of motion, F=Ma
      M=F/a
      Now, we know that Apple and Earth pulls each other with equal force.
      Earth Mass is much much greater than the mass of Apple.
      If the Mass is higher then the acceleration becomes lower, As Mass and acceleration are inversely proportional to each other.
      Earth Mass is much much higher than the Apple's Mass, So Earth's acceleration towards apple will become approx Zero. That's why Earth doesn't moves towards apple, only apple moves towards earth....

    • @starventure
      @starventure Před rokem +1

      @@HarshaHarshG-tb3pu Ok, give me your take on how gravity causes acceleration between masses? Traditionally it’s the radius adjusting it, but…why and how does this measurement really do the deed? I have a hypothesis as to how it works, but would like to see if you have something different first.

    • @HarshaHarshG-tb3pu
      @HarshaHarshG-tb3pu Před rokem +1

      @@starventure Aree kahana kya Chahte ho....!!

    • @HarshaHarshG-tb3pu
      @HarshaHarshG-tb3pu Před rokem +1

      @@starventure I didn't get what you said.
      Can you elaborate your Comment plz.

    • @HarshaHarshG-tb3pu
      @HarshaHarshG-tb3pu Před rokem +2

      You have to think in terms of Inertia. Basically Earth have more Inertia than Apple, As Inertia and Mass are Directly proportional to each other. Inertia is like Laziness, Earth doesn't want to move towards apple as Earth Mass is greater than the Apple's Mass.
      Only Apple moves towards the Earth.

  • @nazlone
    @nazlone Před rokem +4

    This is what I learnt in school in the 1950s.....but my head is spinning from theories that Gravity is NOT a force.

    • @starventure
      @starventure Před rokem

      Gravity=intermass action with planck scale space time warping. Unlike some kinds of electromagnetic radiation, Gravity doesn’t peek at you from behind other masses. Line of sight force only.

    • @leopardtiger1022
      @leopardtiger1022 Před rokem

      Space Time trampolin is NOT correct reason for gravitational motion we observe.

    • @BadOompaloompa79
      @BadOompaloompa79 Před rokem +1

      When you are falling there are no forces acting on you. Its not till something acts to push you away from your gravitationally determined path that you experience a force. The curve of space time is so severe near our planets surface that it requires 9.8m/s of force to push you away from the equilibrium state in that curved space. The curve of spacetime determines your path. Its really counter intuitive but we are like the fish who are trying to understand water. This leads to some stuff that is really weird when you first hear about it , like orbits being a strait line. They make a lot more sense after it sinks in for a while.

    • @MathieusTheWalkingWitness
      @MathieusTheWalkingWitness Před 7 měsíci

      Lol Newton proposed "what goes up must come down" and "mass attracts mass" around 1666... Helium (has mass and NEVER goes down) was discovered in 1868...
      There is no universal law of gravity attraction, cause a simple gas such as helium, debunks that allegedly claimes "law"... i highly suggest you go watch Richard Feynman lecture about how laws of nature are discovered...
      "If it (your theory) disagrees with experiment, it (your theory) is wrong"
      --Richard Feynman
      Once again, dropping a helium balloon (both have mass) disagrees with the proposal of "mass attracts mass"...

  • @sunn298
    @sunn298 Před rokem +1

    how to measure of earth centre

  • @yourmaya1157
    @yourmaya1157 Před rokem

    i like it

  • @user-tl1rw7fc3e
    @user-tl1rw7fc3e Před rokem

    thank you I hope to translate this video into Arabic and the other languages your watcher from egypt

  • @BirhanuAdmasu
    @BirhanuAdmasu Před 6 měsíci +1

    I also convince that Isaac Newton is incredible .

  • @sk_vlogs_9
    @sk_vlogs_9 Před rokem

    Sir mera question hai ki
    Agar ham dono pindo ki bich ki duri ko aadhi kar de to bal yani F kitna Guna ghat jayega ya kitna Guna bhad jayega
    f=g*m1*m2/(d/2)^2

  • @birenkumarg6663
    @birenkumarg6663 Před rokem +1

    And what matter is in the Centre of any body...that is required to be researched ☺️

    • @HarshaHarshG-tb3pu
      @HarshaHarshG-tb3pu Před rokem +2

      What are you trying to say....?!
      Can you plz elaborate.....!!

  • @JohnJohn-zg9hh
    @JohnJohn-zg9hh Před rokem +1

    Long time ago people find, that earth is not ideal sphere, and even centre of the mass is not fixed. In simple words directions of gravity will not intersect in the same point (centar of the earth), or vertical will not be vertical but declined for some part of the second.

  • @nawami2351
    @nawami2351 Před rokem

    Wow..i knew here better❤

  • @computerguy1015
    @computerguy1015 Před 2 lety

    Finally 👍👍

  • @sreenathc
    @sreenathc Před 11 měsíci

    Since Gravitation has now been shown to be fictitious and appears as a force only because of space time curvature, how does this experiment work? Is the large mass warping space so the smaller balls move towards it?

    • @entangledmindcells9359
      @entangledmindcells9359 Před 11 měsíci +1

      pretty much with one minor change.. both masses are warping space/time & both masses are trying to move toward each other.. just the small mass is freely allowed to move.

    • @MathieusTheWalkingWitness
      @MathieusTheWalkingWitness Před 7 měsíci

      Lol Newton proposed "what goes up must come down" and "mass attracts mass" around 1666... Helium (has mass and NEVER goes down) was discovered in 1868...
      There is no universal law of gravity attraction, cause a simple gas such as helium, debunks that allegedly claimes "law"... i highly suggest you go watch Richard Feynman lecture about how laws of nature are discovered...
      "If it (your theory) disagrees with experiment, it (your theory) is wrong"
      --Richard Feynman
      Once again, dropping a helium balloon (both have mass) disagrees with the proposal of "mass attracts mass"...

  • @NEETASPIRANT-ho3jh
    @NEETASPIRANT-ho3jh Před 4 měsíci +1

    Great Mathematician Bhaskaracharya discovered Gravity and Laws of Motion centuries before Sir Isaac Newton

    • @santifpc3749
      @santifpc3749 Před 4 dny

      Bhaskaracharya described gravity in the context of a geocentric model, not a heliocentric one. He does not seem to have concluded that the Sun, Moon, etc. also have gravity, ascribing it as a property of the Earth. He did not create any mathematical description of how gravity works

  • @Sagar-KumarIITPATNA
    @Sagar-KumarIITPATNA Před 10 měsíci +1

    Jai Hind jai Bharat 🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳

  • @jahanzaibshoukat6898
    @jahanzaibshoukat6898 Před měsícem

    Pls guide me, what is actually the difference between the gravity, gravitational force, and the gravitational acceleration??

    • @santifpc3749
      @santifpc3749 Před 4 dny

      gravity, acording to general relativity, is the distortion of space-time that is created by any mass.
      gravitational force is, well, the force that is exerted on any object near a gravitational field. this can be calculated with the formula given in the video.
      gravitational accelerations is, again, the acceleration an object adquires when in free fall inside a gravitational field.