Meriam, Kraige & Bolton — Plane Kinetics of Rigid Bodies: Problem 6_20

6/20 The block \(A\) and attached rod have a combined mass of \(60\text{ kg}\) and are confined to move along the \(60^\circ\) guide under the action of the \(800\text{-N}\) applied force. The uniform horizontal rod has a mass of \(20\text{ kg}\) and is welded to the block at \(B\). Friction in the guide is negligible. Compute the bending moment \(M\) exerted by the weld on the rod at \(B\).