Meriam, Kraige & Bolton — Plane Kinetics of Rigid Bodies: Problem 6_127

6/127 Each of the uniform bars OA and OB has a mass of 2 kg and is freely hinged at O to the vertical shaft, which is given an upward acceleration \(a = g/2\). The links which connect the light collar C to the bars have negligible mass, and the collar slides freely on the shaft. The spring has a stiffness \(k = 130 \text{ N/m}\) and is uncompressed for the position equivalent to \(\theta = 0\). Calculate the angle \(\theta\) assumed by the bars under conditions of steady acceleration.