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

Options

A. `(mu mgd)/(cos theta + mu sin theta)`
B. `(mu gd cos theta)/(cos theta +mu sin theta)`
C. `(mu m gd sin theta)/(cos theta + mu sin theta)`
D. `(mu mgd cos theta)/(cos theta -mu sin theta)`

Answer

B