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Introductory Physics Homework Help
Why is the normal reaction force zero in the absence of any external force?
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[QUOTE="Vatsal Goyal, post: 6027446, member: 638196"] [h2]Homework Statement [/h2] My question is not a homework problem. I am having difficulty in understanding the concept oof contact forces. [h2]Homework Equations[/h2] What I don't understand is that when two bodies A and B are in contact and left on a frictionless surface, they apply normal reactions on each other, then why doesn't that normal reaction force give some acceleration to the blocks and they move away from each other? [h2]The Attempt at a Solution[/h2] The only viable solution I can come up with is that the normal reaction is zero, but they why it would be zero I don't know. [/QUOTE]
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Introductory Physics Homework Help
Why is the normal reaction force zero in the absence of any external force?
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