A body is freely released from point A so that it slides down the smooth inclined plane AB and then along the rough horizontal surface BC and comes to point C with 4 m/sec. Then the coefficient of friction over the rough surface is

A body is freely released from point A so that it slides down the smoo

1.	A body is freely released from point A so that it slides down the smooth inclined plane AB and then along the rough horizontal surface BC and comes to point C with 4 m/sec. Then the coefficient of friction over the rough surface is
A.	0.2
B.	0.4
C.	0.65
D.	0.75
Answer» C. 0.65

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A body is freely released from point A so that it slides down the smooth inclined plane AB and then along the rough horizontal surface BC and comes to point C with 4 m/sec. Then the coefficient of friction over the rough surface is

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