A 6.0-kg block slides from point A down a frictionless curve to point B. After t

Question

A 6.0-kg block slides from point A down a frictionless curve to point B. After the block passes point B, a friction force opposes the motion of the block so that it comes to a stop 2.5 m from B. Calculate the coefficient of kinetic friction between the block and the surface after position B.

A 6.0-kg block slides from point A down a frictionless curve to point B. After the block passes point B, a friction force opposes the motion of the block so that it comes to a stop 2.5 m from B. Calculate the coefficient of kinetic friction between the block and the surface after position B. 2.5 0.40 >0.40 0.40 N 2.5 N

Explanation / Answer

energy conservation: mgh = mg*u*d => u = h/d = 1/2.5 = 0.40 N answer(D)

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