Meriam, Kraige & Bolton — Plane Kinetics of Rigid Bodies: Problem 6_180

6/180 The uniform 40-lb bar with attached 12-lb wheels is released from rest in the orientation shown. The wheels have a centroidal radius of gyration of 4.5 in., and the coefficients of static and kinetic friction between the wheels and the horizontal and vertical surfaces are \(\mu_s = 0.65\) and \(\mu_k = 0.50\). Friction may be neglected in the pins connecting the wheels to the bar. Determine the acceleration components of the mass center of the bar at the instant of release.