4.34 A water flow rate of 4 L/min enters the lawn sprinkler shown in the figure in a vertical direction. The velocity of the jets leaving the nozzles is 17 m/s relative to the sprinkler arm and inclined 30o above the horizontal. Friction in the bearing causes a torque of 0:18 N-m opposing rotation. Determine

(a) the torque required to hold the sprinkler stationary,

(b) the rotational speed if the torque is removed, and

(c) the rotational speed if there is no torque due to the bearings.

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Vrel 30 R=200 mm P4.34