Section: Fluid Mechanics | Type: NAT | Marks: 2
Consider a lawn sprinkler with horizontal arms of radius, a = 10 cm which has water introduced vertically through the centre, as shown in the figure. The exit area of the jet is 25 cm2 and the jet velocity is 1 m/s. The water is ejected orthogonal to the sprinkler arm and the jet makes an angle of 60° with the horizontal plane. Find the torque (in N-m) required to hold the sprinkler stationary. Consider water density 1000 kg/m3. Neglect the effects of friction and gravity. (Round off to two decimal places)
Answer: 0.24 to 0.26