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QUESTION

What is the horizontal distance forearm between the elbow and the point where the weight of the forearm acts?

What is the horizontal distance forearm between the elbow and the point where the weight of the forearm acts?When you lift an object by moving only your forearm, the main lifting muscle in your arm is the biceps. Suppose the mass of a forearm is 1.00 kg. If the biceps is connected to the forearm a distance d_biceps = 3.50 cm from the elbow, how much force F_biceps must the biceps exert to hold a 650 g ball at the end of the forearm at distance d_ball = 33.0 cm from the elbow, with the forearm parallel to the floor? How much force F_elbow must the elbow exert?

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