Physics · Laws of Motion
A small block starts slipping down from a point B on an inclined plane AB, which makes an angle θ with the horizontal. The upper section BC is smooth and the remaining lower section CA is rough with a coefficient of friction μ. It is found that the block comes to rest as it reaches the bottom (point A) of the inclined plane. If BC = 2AC, the coefficient of friction is given by μ = k tan(θ). The value of k is:
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