An object of mass m1 9.0 kg is in equilibrium while

Chapter 13, Problem 13.67

(choose chapter or problem)

An object of mass m1 9.0 kg is in equilibrium while connected to a light spring of constant k 100 N/m that is fastened to a wall, as in Figure P13.67a. A second object, of mass m2 7.0 kg, is slowly pushed up against m1, compressing the spring by the amount A 0.20 m, as shown in Figure P13.67b. The system is then released, causing both objects to start moving to the right on the frictionless surface. (a) When m1 reaches the equilibrium point, m2 loses contact with m1 (Fig. P13.67c) and moves to the right with velocity . Determine the magnitude of . (b) How far apart are the objects when the spring is fully stretched for the rst time (Fig. P13.67d)? [Hint: First determine the period of oscillation and the amplitude of the m1spring system after m2 loses contact with m1.]