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physics

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A person holds a 1.56 baseball in his hand, a distance of 34.0 cm from the elbow joint, as shown in the figure(Figure 1) . The biceps, attached at a distance of 2.75 cm from the elbow, exerts an upward force on the forearm. Consider the forearm and hand to be a uniform rod with a mass of 1.25 . Suppose the biceps exert just enough upward force to keep the system in static equilibrium.Determine the force exerted by the biceps.

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