A ball with weight mg = 20 N is placed on a light platform on the top of a vertical spring with a stiffness k = 200 N/m and is pushed against it. The spring is compressed to a point A, 0.4 m from its equilibrium position. Then, the ball is released from rest. How far from point A, will the ball rise? Neglect air resistance and take g = 10 m/s2.0.8 m 1 m 1.6 m 0.4 m 0.5 m