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Answer to Question #77924 in Classical Mechanics for Charvi
Question #77924
Restoring force of spring is not a reaction force!
Expert's answer
False! Restoring force of spring is a reaction force opposite to the force that is compressing or extending the spring (action force). The restoring force F and the force that is compressing or extending the spring are a pair of action-reaction forces and they are equal in magnitude and opposite in direction.
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Comments
Rather, to begin with it, will be some tiny section near the tip, which being effectively shorter can be stiffer. And a wave of compression will travel along the spring until it's all compressed and then there will be overshoot and much bouncing around until everything finally settles down to the situation that Hooke's law is about.
It's more Hooke's law that will fail. If you contrive to suddenly apply exactly 1 N to the spring then the spring will surely apply exactly 1 N to you, at the same moment. It's just that it won't be 1 N from an even compression of the normal working length of the spring, because, ex hypothesis, most of the spring hasn't had time to move.
But when we are stretching a spring by 1N force of spring constant 10N/m then our force is greater then its restoring force as it moving in the direction of our applied force and stops at 0.1m It shows that it gives an equal and oposite force at a particular distance why?
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