Meriam, Kraige & Bolton — Plane Kinematics of Rigid Bodies: Problem 5_108

5/108 The switching device of Prob. 5/63 is repeated here. If the vertical control rod has a downward velocity \( v = 2 \text{ ft/sec} \) and an upward acceleration \( a = 1.2 \text{ ft/sec}^2 \) when the device is in the position shown, determine the magnitude of the acceleration of point \( A \). Roller \( C \) is in continuous contact with the inclined surface.