A book of weight 10n is pressed between two hands and each hand exerts a force of 40n. If the book just starts to slide down, coefficient of friction is?
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weight of book = frictional force
Mg = 2 u N, where 'u' is the coefficient of friction
so, u = Mg / 2N = 20 / 80 = 0.25
Mg = 2 u N, where 'u' is the coefficient of friction
so, u = Mg / 2N = 20 / 80 = 0.25
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