Question: A one-fortieth-scale model of a ships propeller is tested in a tow tank at 1200 r/min and exhibits a power output of 1.4 ftlbf/s. According

A one-fortieth-scale model of a ship’s propeller is tested in a tow tank at 1200 r/min and exhibits a power output of 1.4 ft•lbf/s. According to Froude scaling laws, what should the revolutions per minute and horsepower output of the prototype propeller be under dynamically similar conditions?

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