The bicep curl is an exercise where you lift up a barbell with weights attached by bending of your arms at the elbow. assume your forearm length (elbow to hand) is 0.525 m, and the barbell is lifted by a vertical distance that is twice the forearm length. also assume that the barbell is at rest at both the start and the end of the motion. calculate how much work you must perform to curl a barbell with a mass of 17.7 kg?
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