A force of 98N is just able to move a block 20 kg (but the block is on the rest ) on a rough surface. Calculate the coefficient of friction.

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A force of 98N is just able to move a block 20 kg (but the block is on the rest ) on a rough surface. Calculate the coefficient of friction.

PRADEEP KUMAR 20th Jan, 2022

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PRADEEP KUMAR 20th Jan, 2022

Given: F = 98N

The block is on rest then f_s = F = 98N

μ_s = f_s / R = f_s/ mg

μ_s = 98N/ 20kg* 9.8ms^-2 = 0.5

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