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A block of mass m is being pulled up a r...

A block of mass `m` is being pulled up a rough incline by an agent delivering constant power P. The coefficient of friction between the block and the incline is `mu`. The maximum speed of the block during the course of ascent is

A

`(P)/("mg" sin theta + mu " mg"cos theta)`

B

`(P)/("mg" sin theta - mu " mg"cos theta)`

C

`(P)/("mg" sin theta)`

D

`(P)/(mu"mg " sin theta)`

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The correct Answer is:
A
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