Torque required to turn a friction bearing (Fig. 3A.1). Calculate the required torque in lbs- ft and

Question:

Torque required to turn a friction bearing (Fig. 3A.1). Calculate the required torque in lbs- ft and power consumption in horsepower to turn the shaft in the friction bearing shown in the figure. The length of the bearing surface on the shaft is 2 in, and the shaft is rotating at 200 rpm. The viscosity of the lubricant is 200 cp, and its density is 50lbm/ft3. Neglect the effect of eccentricity.