Since normal contact force between two surfaces depends on molecular interaction between them, then why does its value change with the acceleration of the elevator?
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It is called a free fall for a reason – QuIcKmAtHs Jan 04 '18 at 14:21
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So tell me the reason – parshyaa Jan 04 '18 at 14:23
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6Possible duplicate of Why does a free-falling body experience no force despite accelerating? – QuIcKmAtHs Jan 04 '18 at 14:23
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this is a duplicate @parshyaa please refer to the above link – QuIcKmAtHs Jan 04 '18 at 14:38
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no problem. in future pls check for duplicates before posting – QuIcKmAtHs Jan 04 '18 at 14:40
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Yah sure i will keep it in mind – parshyaa Jan 04 '18 at 14:44
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My question is still not answered in that link, in the link they are discussing a freely falling body , and there is no contact force acting on a freely falling body and my question is based on a freely falling elevator in which a person is standing and before freely falling there was contact force acting on him but at the moment elevator started freely falling motion, contact force became zero how? – parshyaa Jan 06 '18 at 14:44
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Voting to reopen. I agree with asker that the linked question does not provide a clear answer to this question. – sammy gerbil Jan 26 '18 at 00:49
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@sammygerbil how would i reopen my question, or is it possible – parshyaa Jan 26 '18 at 15:12
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You could post a question on the Physics Meta Site explaining why your question is not a duplicate and asking why it remains closed. This should attract more Reopen Votes and is sometimes successful. See modified closed question won't reopen – sammy gerbil Jan 26 '18 at 16:10
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When acceleration changes, the equilibrium separation between molecules change and hence the reaction force changes.
Ryan Tan
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How equilibrium separation between molecules changes with acceleration? – parshyaa Jan 04 '18 at 16:57
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If the acceleration has changed, then the net force must have changed. It's doubtful that gravity changed, so it must be the normal force between the object and the floor of the elevator that has changed. In order for that to have happened, the intermolecular spacing must have changed. – garyp Jan 04 '18 at 18:11
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Could you provide a link in reference to this , and how change in acceleration of elevator changes the intermolecular spacing or norma force acting on a human standing inside the elevator – parshyaa Jan 06 '18 at 14:38