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A body of mass 60kg is pushed with just ...

A body of mass 60kg is pushed with just enough force to start it moving on a rough surface with `mu_(s)= 0.5 and mu_(k) =0.4` and the force continues to act afterwards. The acceleration of the body is (in `m//sec^(2)`)

A

0.98

B

3.92

C

4.9

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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Knowledge Check

  • A body of mass 40 kg resting on a rough horizontal surface is subjected to a force F which is just enough to start the motion of the body. If mu_s, = 0.5, mu_k = 0.4 and the force F is continuously applied on the body, then the acceleration of the body is (Take g = 10 ms^(-2) )

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