a book of weight 20 newton is present between two hands and each hand exerts a force of 14 Newton if the box just starts to slide down the coefficient friction is
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Contact force (N) = 14 + 14 = 28 N
Friction (f) = mg = 20 N
μ = f / N
= 20 / 28
= 0.71
Coefficient of friction is 0.71
Friction (f) = mg = 20 N
μ = f / N
= 20 / 28
= 0.71
Coefficient of friction is 0.71
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