During a drilling operation, the robotic device is subjected to a force of 800-N at point C, as shown. Replace this force with an equivalent force and moment system at point O.

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.