All Questions
8
questions
1
vote
1
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87
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Does weightlessness make no difference to free fall?
I looked up a lot of articles and questions about free fall motion and weightlessness. And I know there are a lot of similar questions.
In conclusion, I understand that there is no way to distinguish ...
- 305
1
vote
1
answer
123
views
The behaviour of acceleration of a ball in motion
I have a few doubts on how the acceleration of a ball works when we throw it up in the air, In my mind, I could imagine it in some different "real world" cases, So I am listing them all down,...
- 209
0
votes
1
answer
542
views
State space of free falling object is time variant?
In the case of a free fall object, if $h$ denotes distance from floor and $v$ the speed, then, given an input $U = g$, and $X=[h \quad v]^T$ and $\dot{X}=[\dot{h} \quad \dot{v}]^T$, I found that the ...
3
votes
4
answers
854
views
If an object is free falling under gravity, then where is the pseudo force applied? [duplicate]
If I am travelling in a train and the train accelerates forward then I experience a pseudo force backward.
But if someone is free falling under gravity where does he experience pseudo-force because ...
- 167
0
votes
3
answers
149
views
Are there examples of objects that are, but may not seem like they are, in free fall?
Is it possible for a plane to be in free fall while it is in the sky? If not, what is an example of an object that is, but may not seem like it is, in free fall?
0
votes
1
answer
1k
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Question about weightlessness
Let us consider +Y as upward and -Y axis as downward. So the acceleration that works these objects is always $-g$.
For the first picture, if the lift is going upward with acceleration $a$, then will ...
- 79
31
votes
6
answers
2k
views
Can I survive a free fall using a ramp and a rope?
Can I survive a free fall by carrying a very light and resistant ramp using a rope?
Note: lets assume the ramp is a little bit heavier at the bottom and I am very skilled at making it always land ...
- 430
0
votes
2
answers
2k
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Calculate time for which a mass is in free fall [closed]
So I am trying to remember my childhood doing some Physics problems, but seems that I forgot almost everything. But it's not a big thing... that's why I'm training!
My problem is pretty basic ...
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