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#7: A chain lying on the ground is 10 ft long and weighs 80 lbs. How much work is required to raise one end of

#7: A chain lying on the ground is 10 ft long and weighs 80 lbs. How much work is required to raise one end of the chain to a height of 3ft? 386 Enter your answer symbolically, lem #7: as in these examples 386

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