A heavy rope, 80 ft long, weighs 0.2 pounds per foot and hangs over the edge of a building 170 ft high. How much work is done in pulling the rope up to the top of the building?
Added by Lisa M.
Step 1
The force required to lift the rope is equal to its weight, and the weight of the rope is equal to its mass times the acceleration due to gravity. The mass of the rope is given as 0.2 pounds per foot, and the length of the rope is 80 feet, so the total weight of Show more…
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