Water enters vertically and steadily at a rate of 35 L/s into the sprinkler shown in Fig.

Question:

Water enters vertically and steadily at a rate of 35 L/s into the sprinkler shown in Fig. P6–60 with unequal arms and unequal discharge areas. The smaller jet has a discharge area of 3 cm² and a normal distance of 50 cm from the axis of rotation. The larger jet has a discharge area of 5 cm² and a normal distance of 35 cm from the axis of rotation. Disregarding any frictional effects, determine

(a) The rotational speed of the sprinkler in rpm

(b) The torque required to prevent the sprinkler from rotating.

FIGURE P6–60