A 3.40-kg object is attached to a spring and placed on frictionless, horizontal surface. A horizontal force of 30.0 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) Find the maximum acceleration of the object.