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A vertical-axis capstan drum 60 cm in diameter was used to pull inthe anchor chain of a whaler a century ago. Six horizontal arms 1.2m long protruded from the top of the drum, and a man on each armexerted a force of 300 N on it. The efficiency of the system was85%.

a. Find the force applied to the anchor chain
b. How far must each man have walked to raise 100 m of chain?

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