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A heavy rope 30 ft long weighs 0 7 lb ft and hangs over the edge of a building 80 ft high a How much
A heavy rope 30 ft long weighs 0 7 lb ft and hangs over the edge of a building 80 ft high a How much work W is done in pulling the rope to the top of the building W ft lb b How much work W is done in pulling half the rope to the top of the building W ft lb
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