Meriam, Kraige & Bolton — Plane Kinetics of Rigid Bodies: Problem 6_30

6/30 The motor $M$ is used to hoist the 12,000-lb stadium panel (centroidal radius of gyration $\bar{k} = 6.5\text{ ft}$) into position by pivoting the panel about its corner $A$. If the motor is capable of producing $5000\text{ lb-ft}$ of torque, what pulley diameter $d$ will give the panel an initial counterclockwise angular acceleration of $1.5\text{ deg/sec}^2$? Neglect all friction.