The picture shows an arm lifting a barbell. The total mass of the barbell is 2.5 kg. The distance between the man's elbow and hand is 46 cm. The distance between the man's elbow and shoulder is 45 cm. The angle between his forearm and the horizontal (labeled "1") is 38 degrees. The angle between his upper arm and the horizontal (labeled "2") is 19 degrees. Calculate the torque exerted by the barbell's weight about his elbow.
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The picture shows an arm lifting a barbell. The total mass of the barbell is 2.5 kg. The distance be...
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