Question: The piston C moves vertically between the two smooth walls. If the spring has a stiffness of k = 15 lb/in., and is unstretched when

The piston C moves vertically between the two smooth walls. If the spring has a stiffness of k = 15 lb/in., and is unstretched when θ = 0°, determine the couple M that must be applied to AB to hold the mechanism in equilibrium when θ = 30°. 8 in. B 12 in. 0 A M k = 15 lb/in.

8 in. B 12 in. 0 A M k = 15 lb/in.

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