# Question

A ball of radius R and mass Mrolls down an incline of angle .

(a) For the ball to roll without slipping, should the tangent of the maximum angle of incline be equal to (1) 3 μs/2, (2) 5 μs/2, (3) 7 μs/2, or (4) 9 μs/2? Here, is the coefficient of static friction.

(b) If the ball is made of wood and the surface is also wood, what is the maximum angle of incline?

(a) For the ball to roll without slipping, should the tangent of the maximum angle of incline be equal to (1) 3 μs/2, (2) 5 μs/2, (3) 7 μs/2, or (4) 9 μs/2? Here, is the coefficient of static friction.

(b) If the ball is made of wood and the surface is also wood, what is the maximum angle of incline?

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