ln the figure below, determine the work rate by he air at the instant shown if Vpiston = 10 m/s, the torque T = 20 N.m, the velocity gradient (dv/dy) or shear rate at the belt surface is 100 s-1 , and the pressure acting on the piston is 400 Pa. The belt is 80 cm x 50 cm and the 40 cm high rectangular piston is 50 cm deep (into the paper). (Hint: Power = work rate = sum of work rate from fan, pressure and belt. Work = Force x distance ; Work rate = Force x Velocity)