A chain of length L and mass density ? lies straight on a frictionless horizontal surface. You
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A chain of length L and mass density ? lies straight on a frictionless horizontal surface. You grab one end and pull it back along itself, in a parallel manner (see Fig.). Assume that you pull it at constant speed v. What force must you apply? What is the total work that you do, by the time the chain is straightened out? How much energy is lost to heat, if any?
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Let x be the distance your hand has moved Then x 2 is the length of the moving part of the chain bec...View the full answer
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