Abstract:
It is possible to raise water vertically by using a continuous rope moving around two pulleys. The lower pulley must be submerged and the water being lifted will be discharged at the upper pulley. Langharr (1) reported that by using cotton clothesline he was able to lift 11 gallons of water per minute through a vertical distance of 25 feet. He used a double pulley driven by an electric motor and two cotton clotheslines. The clotheslines were not enclosed in a tube.
Keywords:
rope pump, fluid mechanics
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