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A block of mass 20 kg is pushed with a h...

A block of mass 20 kg is pushed with a horizontal force of 90N. If the coefficient of static and kinetic friction are 0.4 and 0.3, the frictional force acting on the block is `(g = 10ms^(-2))`

A

90N

B

80N

C

60N

D

30N

Text Solution

Verified by Experts

The correct Answer is:
C
`f_(k)=mu_(k)N, N=mg`
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