Aload of 45 n attached to a spring that is hanging vertically stretches the spring 0.14 m. what is the spring constant?

Why should seat belts not be mandatory quick plz

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

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.