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In: Physics

A block is at rest on a plank whose angle can be varied. The angle is...

A block is at rest on a plank whose angle can be varied. The angle is gradually increased from 0 deg. At 29.4°, the block starts to slide down the incline, traveling 3.30 m down the incline in 1.50 s.

a) Calculate the coefficient of static friction between the block and the plank.

b) Calculate the kinetic coefficent of friction between the block and the plank.

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