Which is true about the work done by fric1on v v a b

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Unformatted text preview: eglect drag.) A.  B.  C.  D.  more than 20 cm less than 20 cm 20 cm There’s not enough informa>on E.  I’m torn between two answers Non- conserva>ve forces •  Work done by non- conserva>ve forces –  Zero if perpendicular to the displacement –  Non- zero otherwise –  Nega>ve for a fric>onal force Macroscopic Work done by Fric>on f f “Heat” is just the kine>c energy of the atoms! A block slides down a ramp. If fric>on is significant, in which case is the final velocity largest? (Assume same µK in both cases) A B A)  A B)  B C)  Neither. They are the same A block slides down a ramp. If fric>on is significant, in which case is the...
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This note was uploaded on 03/26/2014 for the course PHYSICS 101 taught by Professor Bennet during the Fall '08 term at Johns Hopkins.

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