The $0\mathrm{.}8-$kg sphere A having a velocity of $50$ m$/$s is fired into the edge of the $8-$kg sphere

B as shown. After the impact, determine the angle $$ the sphere B will swing when it

stops. Take $=0\mathrm{.}6.$ The disk is originally at rest. The rod AB has a mass of $4$ kg$?$

Determine the agular acceleration of the rod and the reaction forces at A $($ & $)$ at

that instant.

Solution: