Chapter 3.3, Problem 50P

The torsional spring of constant $k_T=50\text{N}\cdot \text{m/rad}$ is undeformed when $\theta =0.$ Determine the value(s) of $\theta$ over the range $0\le \theta \le 180°$ for which equilibrium exists. Use the values $m_A=10\text{kg},m_B=1\text{kg,}{m}_{OA}=5\text{kg},$ and $r=0.8\text{m}.$ Assume that OA is a uniform slender rod with a particle A (negligible size) at its end, and neglect the effects of the small ideal rollers.