(9-50) A pendulum consists of a mass M hanging at the bottom end of a massless rod of length l,whic

(9-50) A pendulum consists of a mass M hanging at the bottom end of a massless rod of length l,which has a frictionless pivot at its top end. A mass m, moving as shown in Fig. 9-42 with velocity v, impacts M and becomes embedded. What is the smallest value of v sufficient to cause the pendulum (with embedded mass m) to swing clear over the top of its arc?