Reconsider the lawn sprinkler in Prob. 656E. If the rotating head is somehow stuck, determine the moment

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Reconsider the lawn sprinkler in Prob. 6–56E. If the rotating head is somehow stuck, determine the moment acting on the head.


Data from Problem 56

A large lawn sprinkler with two identical arms is used to generate electric power by attaching a generator to its rotating head. Water enters the sprinkler from the base along the axis of rotation at a rate of 5 gal/s and leaves the nozzles in the tangential direction. The sprinkler rotates at a rate of 180 rpm in a horizontal plane. The diameter of each jet is 0.5 in, and the normal distance between the axis of rotation and the center of each nozzle is 2 ft. Determine the maximum possible electrical power produced.

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