A 1 kilogram mass is attached to a spring and a force of 20 Newton is required to stretch the system2 meter below its equilibrium position.(a) Suppose that damping is neglected and there is no external forces applied, Find the time atwhich the mass first crosses the resting position, if the mass is initially released 2 meters belowthe resting position, with the initial velocity of 4 meter per second upward.