A 65 kg woman is horizontal in a push-up position. What are the vertical forces acting on her hands?​ with steps :

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

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.

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.