If the spring has a torsional stiffness k = 300 N # m >
Chapter 11, Problem 11-43(choose chapter or problem)
If the spring has a torsional stiffness \(k = 300\ N \cdot m/rad\) and is unwound when \(\theta = 90^{\circ}\), determine the angle for equilibrium if the sphere has a mass of 20 kg. Investigate the stability at this position. Collar C can slide freely along the vertical guide. Neglect the weight of the rods and collar C.
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