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When you lift an object by moving only your forearm, the main lifting muscle in your...

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 1.20 kg . If the biceps is connected to the forearm a distance dbiceps = 3.50 cmfrom the elbow, how much force Fbiceps must the biceps exert to hold a 950 g ball at the end of the forearm at distance dball = 36.0 cm from the elbow, with the forearm parallel to the floor? How much force Felbowmust the elbow exert?

Science   Advanced-Physics   
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