A spring with a constant of 32N/m is placed on a horizontal smooth surface and a mass of 2.3 kg is pushed against it. As a result the spring is compressed by 15 cm. The mass is then released.
a. What is the amount kinetic of potential energy stored in the spring when it is compressed?
b. What is the kinetic energy of the mass after the spring is released and the mass is no longer in contact with the spring?
c. What is the velocity of the mass as it leaves contact witht he spring.