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13. A heavy rope, 40 ft long, weighs 0.4 lb/ft and hangs over the edge of a building 110 ft high. How much work
13. A heavy rope, 40 ft long, weighs 0.4 lb/ft and hangs over the edge of a building 110 ft high. How much work is done in pulling the rope to the top of the building? How much work is required to pull up half of the rope?
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Calculus Early Transcendentals
Authors: James Stewart
7th edition
538497904, 978-0538497909
