4. The clutch system shown in the following Figure is used to transmit torque through a 2-
mm-thick oil film with u=0.38 N-s/m² between two identical 30-cm-diameter disks. When
the driving shaft rotates at a speed of 1200 rpm, the driven shaft is observed to rotate at
1125 rpm. Assuming a linear velocity profile for the oil film, determine the transmitted
torque.
Driving
shaft
30 cm
Driven
shaft
2 mm
SAE 30W oil