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A block of mass (m) slides along the tra...

A block of mass (m) slides along the track with kinetic friction mu. (A) man pulls the block through a rope which makes an angle `theta` with the horizontal as shown in the figure. The block moves with constant speed v. Power dlivered by man is
.

A

`Tv`

B

`Tv cos theta`

C

`(T cos theta-mumg)v`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
B
`P=F. v Fv cos theta=TV cos theta`
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