A 10-lb collar is attached to a spring and slides

A 10-lb collar is attached to a spring and slides without friction along a fixed rod in a vertical plane. The spring has an undeformed length of 14 in. and a constant k = 4 lb/in. Knowing that the collar is released from rest in the position shown, determine the speed of the collar at

(a) Point A,

(b) Point B.

k-4 lbin. ww 14 im ww 1015 14 in 14 in 14 in