A 4.70 kg object on a horizontal frictionless surface is attached to a spring with spring constant 920 N/m. The object is displaced from equilibrium 50.0 cm horizontally and given an initial velocity of 11.3 m/s back toward the equilibrium position.
(a) What is the frequency of the motion?
Hz
(b) What is the initial potential energy of the block-spring system?
J
(c) What is the initial kinetic energy?
J
(d) What is the amplitude of the motion?
m