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A uniform bar of length b and mass m is suspended at its ends by two wires, each of length b, from points A and B in the horizontal plane a distance b apart. A couple M is applied to the bar, causing it to rotate about a vertical axis to the equilibrium position shown. Derive an expression for the height h which it rises from its original equilibrium position where it hangs freely with no applied moment. What value of M is required to raise the bar the maximum amount b?
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Engineering Mechanics: Statics
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