Skills for analyzing situations using equilibrium conditions
Using biceps to hold a barbell Find the force that the biceps muscle shown in Figure P7.26 exerts on the forearm when you lift a 16-kg barbell with your hand. Also determine the force that the bone in the upper arm (the humerus) exerts on the bone in the forearm at the elbow joint. The mass of the forearm is about 5.0 kg and its center of mass is 16 cm from the elbow joint. Ignore the triceps muscle.
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