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Elias is working out in the gym. The weight of his forearm is 3 pounds. The center of mass of his lower arm is about

Elias is working out in the gym. The weight of his forearm is 3 pounds. The center of mass of his lower arm is about at its center (the forearm is 35cm long). The dumbbell is 40pounds. The elbow joint (1) is the fulcrum. What is the force exerted by the bicep? The muscle pulls vertically (approximation) at a distance of 4 cm from the joint

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