PROBLEM 10.69 Two identical uniform rods, each of weight Wand length L, are attached to pulleys that are connected by a belt as shown. Assuming that no slipping occurs between the belt and the pulleys, determine the positions of equilibrium of the system and state in each case whether the equilibrium is stable, unstable, or neutral. SOLUTION Let each rod be of length Land weight W. Then the potential energy Vis sincos222θθ=+LLVWWThen cossin 22
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