(See Fluids in the News article titled “Tailless helicopters,” Section 5.2.4.) Exhaust g...

(See Fluids in the News article titled “Tailless helicopters,” Section 5.2.4.) Exhaust gas from a tailless helicopter turbojet engine flows through the three 1-ft-diameter rotor blade nozzles shown in Fig. P5.65 at a rate of 500 ft³/s. Determine the angular velocity of the rotor if the torque on the rotor is negligible.