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in Laws of motion by (52.4k points)

The system shown is called Russell’s traction. If the sum of the downward forces exerted at A and B by the patient’s leg is 32.2 N, what is the weight W?

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The force in the cable is W everywhere. The free-body diagram of the leg is shown. The downward force is given, but the horizontal force FH is unknown. 

The equilibrium equation in the vertical direction is

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