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A chain of mass m and length l = 5m is p...

A chain of mass `m` and length `l = 5m` is placed on a horizontal surface along `x`- axis as such its end `A` is at the origin and `B ` is at `x=l`, the surface is rough with coefficient of friction is 0.5 from `x=0` to `x=l` for `x>l` , the surface is smooth. Determine the minimum velocity `'Vo'` in m/s with which it must project along positive x-axis so that it lies completely in the frictionless region before coming to rest.

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