An object with mass 0.230 kg is acted on by an elastic restoring force with force constant 10.7 N/m. The object is set into oscillation with an initial potential energy of 0.150 J and an initial kinetic energy of 6.60×10-2 J
a) What is the amplitude of oscillation?
b) What is the potential energy when the displacement is one-half the amplitude?
c) At what displacement are the kinetic and potential energies equal?
d) What is the value of the phase angle ? if the initial velocity is positive and the initial displacement is negative?