The spring has stiffness k and unstretched length L. If it is attached to the smooth collar of weight W and the collar is released from rest at A, determine the speed of the collar just before it strikes the end of the rod at B. Neglect the size of the collar.

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Given: k = 3 lb ft L = 2 ft W = 5 lb a = 6 ft b = 4 ft c = 3 ft d = 1 ft e = 1 ft f = 2 ft 8 = 32.2 ft 2 S