The collar C of mass m = 2 kg slides freely on the rod EF. At the instant shown, the colla...

The collar C of mass m = 2 kg slides freely on the rod EF. At the instant shown, the collar C is moving downward with speed v1 = 2.5 m/s and it is 1/3 of the way between E and F. The dimensions are L = 2.1 m, w = 1.9m, h = 2.3 m, and d = 1.2 m.

If the unstretched length of the spring is L0 = 4 m and the spring stiffness is k = 50 N/m, determine the speed of the collar when it reaches F. Assume that the attachment point at A does not impede the spring.

Figure P4.44