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A body of mass 40kg resting on a rough h...

A body of mass 40kg resting on a rough horizontal surface is subjected to a force `P` which is just enough to start the motion of the body. If `mu_(s)=0.5mu_(k)=0.4 , g=10ms^(-2)` an dthe force `P` is continuously applied on the body, then the accceleration of the body is.

A

`0.98`

B

`3.92`

C

`4.90`

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
A
`F_(R)=f_(s)-f_(k),a=(mu_(s)-mu_(k))g`
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