Why is it possible to drive a nail into a piece of wood with a hammer, but it is not possible to push a nail in by hand?
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when you swing a hammer you increase its kinetic energy, so that by the time it strike the nail it imparts a large force which drives the nail into the wood.
the hammer is basically an energy reservoir to which you are adding energy during swing.
the hammer is basically an energy reservoir to which you are adding energy during swing.
842abhinavkumar:
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which question?
it's on top in questions of my profile. q. 15
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