Question: The spring has a stiffness k = 600 lb/ft and is unstretched when ? = 45 o . If the mechanism is in equilibrium when

The spring has a stiffness k = 600 lb/ft and is unstretched when ? = 45^o. If the mechanism is in equilibrium when ? = 60^o, determine the weight of cylinder D. Neglect the weight of the members. Rod AB remains horizontal at all times since the collar can slide freely along the vertical guide.

5 ft

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