The 4 lb pulley has a diameter of 1 ft and the axle has a diameter of 1 in If the coefficient of kinetic friction between the axle and the pulley is k 0 20, determine the vertical force P on the rope required to lift the 20 lb block at constant velocity P 6 in ...

Frictional Force on Journal Bearing Here k tan 1 k tan 1 ...

The 4-lb pulley has a diameter of 1 ft and the axle has a diameter of 1

Question:

The 4-lb pulley has a diameter of 1 ft and the axle has a diameter of 1 in. If the coefficient of kinetic friction between the axle and the pulley is μ_k = 0.20, determine the vertical force P on the rope required to lift the 20-lb block at constant velocity.