3.A sprinkler with four identical arms is to be converted into a turbine to generate electric power by attaching a generator to its rotating head as show below. Water enters the sprinkler from the base along the axis of rotation at a rate of 20 L/s and leaves thenozzle in the tangential direction. The sprinkler rotates at a rate of 100 rpm in a horizontal plane. The diameter of each jet is 1 cm, and the normal distance between the axis of rotation and the center of each nozzle is 0.6 m. What is the torque associated with this rotation