A 20- kg piece of wood slides on the surface shown infig, Ask an Expert

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A 2.0- kg piece of wood slides on the surface shown inFig 7.33 The curved sides are perfectly smooth, but the roughhorixontal bottom is 30 m long and has a kinetic frictioncoefficient of 0.20 with the wood. The iece of wood starts fromrest 4.0 m above the rough bottom

(a) Where will this woodeventually come to rest?

(b) For the motion from the initialrelease until the piece of wood comes to rest, what is the total amount of work done by friction?

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