A block of mass M is pulled along a hori...

A block of mass M is pulled along a horizontal surface by applying a force at angle `theta` with the horizontal. The friction coefficient between the block and the surfasce is `mu`. If the block travels at a uniform velocity, find the work donen by this applied force during a displacement d of the blcok.

`(mu Mgd cos theta)/(cos theta + mu sin theta)`

`( mu Mgd)/(cos theta)`

`( mu Mgd sin theta)/(cos theta + mu sin theta)`

`( mu Mgd cos theta)/(sin theta)`

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