Can You Jump in a Free Falling Elevator?

In summary, the conversation is about whether or not someone can jump in a free falling elevator. There are differing opinions and explanations, but it is generally agreed upon that if the person is in the proper position, they can jump. However, they may hit their head if they jump too hard. The person may also feel weightless in the elevator due to the acceleration of gravity being equal to the acceleration of the elevator. They still have mass and inertia, but it would seem like gravity has disappeared. It is also mentioned that the person could push off from the floor of the elevator to jump, but if they are in the middle and unable to touch any of the sides, they would be stuck. The conversation ends with the acknowledgement that the information
  • #1
vruls
4
0
In a free falling elevator, can you jump, my question is as simple as that, my teacher said you can't (due to newtowns 3rd law since there would be nothing with which I could cause the reaction of jumping) but still can you ?
 
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  • #2
If the elevator is in free fall then you will probably be sort of "floating" as you aren't directly connected to it.
 
  • #3
Hello vruls. Welcome to PF !

If you are in the proper position you definitely could jump. If you jump very hard you would likely bang your head.

If you jumped up you wouldn't come back down unless you collided with the ceiling and rebounded from it.
 
  • #4
Thanks, and hello to everyone else
but why exactly would I be weightless? And what about inertia wouldn't that make me have weight?
 
  • #5
vruls said:
Thanks, and hello to everyone else
but why exactly would I be weightless? And what about inertia wouldn't that make me have weight?

The elevator is falling with you so you can't tell whether you're falling or floating weightless.

You still have mass and inertia. But it would look and feel like gravity had gone away.
 
  • #6
Antiphon said:
The elevator is falling with you so you can't tell whether you're falling or floating weightless.

You still have mass and inertia. But it would look and feel like gravity had gone away.
But I could still jump right?
 
  • #7
you certainly could push off from the elevator floor (as sammy has said). Due to Newton's 3rd law, you cause a downward force on the elevator, which causes an upward force on you. But if you were in the middle of the elevator and weren't able to touch any of the sides, then you would be stuck (unable to jump), since you'd have nothing to push off from. (assuming the elevator isn't slowed down by air resistance).
 
  • #8
K thanks a lot this was really usefull
 
  • #9
If you were on top of the elevator then you would have separated from it as you would weigh much less i think.
 

FAQ: Can You Jump in a Free Falling Elevator?

What is a free falling elevator?

A free falling elevator is an elevator that is in a state of motion where the only force acting on it is gravity. This means that the elevator is accelerating towards the ground with no resistance or support from the elevator's mechanisms.

How does a free falling elevator differ from a normal elevator?

A normal elevator operates by using a motor to pull the elevator up or down along a track. This creates a sense of weightlessness as the elevator moves up or down. In a free falling elevator, there is no motor or track involved, and the elevator is in a state of free fall, giving the occupants a true sense of weightlessness.

Is it dangerous to be in a free falling elevator?

In theory, a free falling elevator could be dangerous, but in reality, it is designed to be safe. Elevators are built with multiple safety mechanisms, such as emergency brakes and shock absorbers, to prevent any harm to the occupants. Additionally, free falling elevators only reach a maximum speed of about 9.8 meters per second, which is equivalent to the acceleration due to gravity.

Can a free falling elevator go up as well as down?

Yes, a free falling elevator can go up as well as down. The direction of the elevator is determined by the initial velocity it is given. If the elevator is pushed upwards, it will go up, and if it is pushed downwards, it will go down. However, once the elevator starts free falling, it will continue to do so until it reaches the ground.

What happens to objects inside a free falling elevator?

Objects inside a free falling elevator will appear to float, as they are also in a state of free fall. This is because the objects are no longer being pulled towards the ground by the force of gravity, but are instead falling at the same rate as the elevator. This phenomenon is known as weightlessness or zero gravity.

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