Water enters a two-armed lawn sprinkler along the vertical axis at a rate of 60 L/s, and l...

Water enters a two-armed lawn sprinkler along the vertical axis at a rate of 60 L/s, and leaves the sprinkler nozzles as 2-cm diameter jets at an angle of θ from the tangential direction, as shown in Fig. P13-73. The length of each sprinkler arm is 0.45 m. Disregarding any frictional effects, determine the rate of rotation  of the sprinkler in rev/min for (a) θ = 0°, (b) θ = 30°, and (c) θ = 60°.