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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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When acceleration changes, the equilibrium separation between molecules change and hence the reaction force changes.

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  • $\begingroup$ How equilibrium separation between molecules changes with acceleration? $\endgroup$ – parshyaa Jan 4 '18 at 16:57
  • $\begingroup$ 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. $\endgroup$ – garyp Jan 4 '18 at 18:11
  • $\begingroup$ 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 $\endgroup$ – parshyaa Jan 6 '18 at 14:38

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