A spring is stretched an amount x. If the spring is then stretched to double this length, the potential energy stored in the spring: stay the same O doubles O increases by 4 times is halved

1. The restoring force from a non-ideal spring can be described by F-250N/m A-800N/m³. (Az)³, where Az is measured from equilibrium. How much work is done compressing this spring by 10 cm?

A bunjee jumper has an elastic cord attached to his feet. The cord whose unstretched length is 10 m behaves just like a sprint and is attached at the other and to a platform high above the ground. After the bunjee jumper jumps off the platform where is his speed the greatest? -ar the lower point where the gravitational potential energy is smallest -when the upward force from the cord balances the force of gravity -when the kinetic energy equals the elastic energy in the cord -10 m below the platform when the cord first begins to stretch

A particular spring on the Earth is found to have a spring constant of k = 1400 N/m. If the same spring is taken to Marsa. The spring constant will be less than on Earthb. The spring constant will be the same as on Earthc. The spring constant will be more than on Earthd. Springs do not work on Marse. We cannot answer this question because we cannot get a spring to Mars