A 3.40-kg object is attached to a spring and placed on frictionless, horizontal surface. A horizontal force of 12.0 N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position (the origin of the x axis). The object is now released from rest from this stretched position, and it subsequently undergoes simple harmonic oscillations.

(a) determine the frequency of the oscillations
(b) determine the maximum acceleration of the object.
(c) Where does the maximum acceleration occur?
(d) determine the total energy of the oscillating system.