Question: A 7.5-lb collar is released from rest in the position shown, slides down the inclined rod, and compresses the spring. The direction of motion is

A 7.5-lb collar is released from rest in the position shown, slides down the inclined rod, and compresses the spring. The direction of motion is reversed and the collar slides up the rod. Knowing that the maximum deflection of the spring is 5 in., determine

(a) The coefficient of kinetic friction between the collar and the rod,

(b) The maximum speed of the collar.

-18 in. k-60 lb/ft

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