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A man of mass 50 kg is standing on one e...

A man of mass 50 kg is standing on one end of a stationary wooden plank resting on a frictionless surface. The mass of the plank is 100 kg its length is 75 m and the coefficient of friction between the man the plank is `0.2` Find the least possible time (in sec) in which the man reach the other end starting from rest and stopping at the other end.

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