1.

A block of mass m is pulled along a horizontal surface by applying a force at an angle q with the horizontal. If the block travels with a uniform velocity and has a displacement d and the coefficient of friction is mu then the work done by the applied force is

Answer»

`(MU mgd)/(cos theta + mu SIN theta)`
`(mu GD cos theta)/(cos theta +mu sin theta)`
`(mu m gd sin theta)/(cos theta + mu sin theta)`
`(mu mgd cos theta)/(cos theta -mu sin theta)`

Answer :B


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