In some damping systems, a circular disk immersed in oil is used as a damper, as shown in...

In some damping systems, a circular disk immersed in oil is used as a damper, as shown in Fig. P9-56. Show that the damping torque is proportional to angular speed in accordance with the relation Tdamping = C ω where C = 0,5πμ(l/a +1/b)R4 Assume linear velocity profiles on both sides of the disk and neglect the tip effects.