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velocity of a body of mass 2kg moving in...

velocity of a body of mass `2kg` moving in `x-y` plane is given by `vecv=(2hati+4thatj)m//s`, where `t` is the time in second. The power delivered to the body by the resultant force acting on it at `t=5sec` is.

A

`7mumg//5`

B

`4mumg//7`

C

`5mumg//7`

D

`7mumg//2`

Text Solution

Verified by Experts

The force of friction, when it is not slipping, is less than its limiting value : `|f| le muN`. This leads to the condition on `F`.
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