40V A constant force vecF is acting on a...

40V A constant force `vecF` is acting on a body of mass m makes it move with constant velocity `vecv` as shown in the M figure. The power P exerted is

A

`F cos theta v`

B

`(F cos theta)/(mg)`

C

`(F mg cos theta)/(v)`

D

`(mg sin theta)/F`

Text Solution

Verified by Experts

The correct Answer is:

A

Power = (component of force in the direction of velocity) `|vecv|`
`= F cos theta v`.

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