Meriam, Kraige & Bolton — Plane Kinematics of Rigid Bodies: Problem 5_101

5/101 SS The 9-ft steel beam is being hoisted from its horizontal position by the two cables attached at A and B. If the initial angular accelerations are \(\alpha_1 = 0.2 \text{ rad/sec}^2\) and \(\alpha_2 = 0.6 \text{ rad/sec}^2\), determine the initial values of (a) the angular acceleration of the beam, (b) the acceleration of point C, and (c) the distance \(d\) from A to the point on the centerline of the beam which has zero acceleration.