Meriam, Kraige & Bolton — Plane Kinematics of Rigid Bodies: Problem 5_116

5/116 The shaft of the wheel unit rolls without slipping on the fixed horizontal surface. If the velocity and acceleration of point \(O\) are \(3 \text{ ft/sec}\) to the right and \(4 \text{ ft/sec}^2\) to the left, respectively, determine the accelerations of points \(A\) and \(D\). (Note: Dimensions from the diagram are \(R = 10 \text{ in}\) for the outer wheel and \(r = 2 \text{ in}\) for the shaft).