The pump operates using the motor that has a power of 85 W. If the impeller at B is turning at 150 rev/min. determine the maximum shear stress developed in the 20-mm-diameter transmission shaft at A.

Prob (5-32): The pump operates using the motor that has a power of 85 W. If the impeller at B is turning at 150 rev/min. determine the maximum shear stress developed in the 20-mm-diameter transmission shaft at A.