Objects with different masses fall at the same rate #physics

A bowling ball and feather were dropped at the same time to demonstrate air resistance.

Documentary: Human Universe (2014)
Credit: BBC

[megaladon]

I was more shocked by the size of the room where the vacuum was created, THIS IS A HUGE HANGAR

[LacoSinfonia]

Galileo would shit his pants if he saw a vacuum chamber

[safty]

for those who are confused 🤔


the sum of forces acting on an object determine its acceleration
sum{external forces}={effictive force}
the first experiment was done in atmosphere
so the acting forces are
1- gravitational force
2- air drag
so the eqn. to calculate the acceleration (a) for each body would be
(gravitational) - (drag) = m*a
can be written
(m*g) - (drag) = m*a
that means even if the feather had the same mass as the ball (the same m*g) and the drag was too high on it compared to the drag of the ball the effective acceleration still would end up lower than the ball
the second experiment was done in vacuum
so the external forces no more have air drag in it
so eqn. for each body would be
(m*g) = m*a
simplifies to
(g) = a
that means that all bodies have the same acceleration in vacuum which here is (g)
if the gravitational force was the only to act on them in vacuum
(no magnetic force for example)
with the same acceleration and both starting from rest
that means the displacement will be equal for the same amount of time

[XgilPlay]

In a vacuum, they reach the ground at the same time.

So let me recap: both objects have the same gravitational pull. However, they have different air resistance. As such, the heavier object will reach the ground first.

[XanderX_the_lone_survivor]

Physics when the teacher said ignore air resistance



Edit : hahaha, notification goes ding-ding-ding

[pandy]

never thought i'd see a feather bounce

[kartikgaming]

With great air resistance, comes great responsibility

[sadiaaa]

For those who wanna know: fhe difference is that the ball will hit still with a greater force. So rest assured, these feathers wouldn't hurt you if they landed on you, they have less mass, therefore less force

[michel]

1) F=m1*a .... 2) F=(G*m1*m2)/(R^2) ---> a=(G*m2)/(R^2) ---> acceleration is independent of the mass of the object being accelerated

[djisydneyaustralia]

Now that's a vacuum chamber, holy shit thats huge

[LifeOfMrBrian]

It's more shocking view it with normal speed, so we could appreciate the 'great' weight of feathers.

[Ayush-Yadava.]

g = 9.8m/s^2 for every body removing the External resistance

[christopherjohns]

This experiment was done on the moon with a feather and a hammer by the Apollo 15 mission. Very cool.

[SurprisedDivingBoard-vurz]

It is like a balance you can put things on either side to equate. Same velocity same acceleration. Orbits are based on distance from sun rather than mass.

[FroginFrock]

That's what I'm looking for! Thanks

[EzemaKenneth-ve]

1589: Galilean Leaning Tower of Pisa Experiment
Proves that g is same for every mass in the same gravitational force field given that air resistance is neglected

[Sabeen]

In case of air resistance the object having less mass decreses it's velocity, without air resistance there is only one force which is gravitational force acting equally on both object produce same acceleration due to which both drop with same time with same speed

[SuryaKarigar]

This is how our mind works.
Pressure = more effort
No Pressure = relaxed 😂😂

[weLiveInSociety]

*Ngl, that edit goes hard for some reason* 💀

[DrsHWolfenstein]

This video tells me more than an entire chapter on gravity in high school.