A mass attached to a spring, which in turn is attached to a wall, is free to move on a friction-free horizontal surface. The mass is pulled back and then released.
a. What form of energy is added to the system prior to the release of the mass? Explain.
b. At what points in the motion of the mass after its release is its potential energy the greatest? Explain.
c. At what points is the kinetic energy the greatest? Explain.