The external and internal diameters of a collar bearing are 200 mm and 150 mm respectivery. Between the collar surface and the bearing, an oil film of thickness 0.25 mm and of viscosity 0.9 poise, is...

Extracted text: The external and internal diameters of a collar bearing are 200 mm and 150 mm respectivery. Between the collar surface and the bearing, an oil film of thickness 0.25 mm and of viscosity 0.9 poise, is maintained. Find the torque and the power lost in overcoming the viscous resistance of the oil when the shaft is running at 250 r.p.m.