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

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

A

90 N

B

80 N

C

60 N

D

30 N

Text Solution

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The correct Answer is:
C
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