Question: The pulley has a radius r and fits loosely on the shaft of diameter d. If the loadings acting on the belt cause the pulley

The pulley has a radius r and fits loosely on the shaft of diameter d. If the loadings acting on the belt cause the pulley to rotate with constant angular velocity, determine the frictional force between the shaft and the pulley and compute the coefficient of kinetic friction. Neglect the weight of the pulley.

Given:

r = 3 in

d = 0.5 in

W = 0 lb

F1 = 5 lb

F2 = 5.5 lb

r R F2 F1 F2

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