Reconsider Prob. 692. For the specified flow rate, investigate the effect of discharge angle on the

Reconsider Prob. 6–92. For the specified flow rate, investigate the effect of discharge angle θ on the rate of rotation ṅ by varying u from 0° to 90° in increments of 10°. Plot the rate of rotation versus θ, and discuss your results.

Data from Problem 92

Water enters a two-armed lawn sprinkler along the vertical axis at a rate of 75 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. P6–92. The length of each sprinkler arm is 0.52 m. Disregarding any frictional effects, determine the rate of rotation ṅ of the sprinkler in rev/min for 

(a) θ = 0°, 

(b) θ = 30°, 

(c) θ = 60°.

FIGURE P6–92

Transcribed Image Text:

1 1 I 1 I r = 0.52 m