Friction

# Friction - motion of the crate, exerting a force of k W at...

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Friction Friction is the most common nonconservative force, and we will demonstrate why it is not conservative. Consider a crate on a rough floor, of weight W. The crate is pushed from one end of the floor to the other, a distance of h meters, and then back to its original spot. What is the net work done on the crate? At all times the friction opposes the
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Unformatted text preview: motion of the crate, exerting a force of k W at all times. Thus the total work done over the trip is simply (- 2)( k W)(h) = - 2hw k , clearly not equal to zero. The net work by friction over a closed path is not zero, and it is nonconservative....
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## This note was uploaded on 12/03/2011 for the course PHYSICS 010 taught by Professor - during the Fall '09 term at Montgomery.

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