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A particle is projected at t=0 from a po...

A particle is projected at `t=0` from a point on the ground with certain velocity at an angle with the horizontal. The power of gravitation force is plotted against time. Which of the following is the best representation?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
C
`P=F.v`
`=(-mg hatj).[u_(x)hati+(u_(y)-g t)hatj]`
`=(-mgu_(y))+mg^(2)t`
i.e P versus t graph is a straight line with negative intercept and positive slope.
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