A 3-in.-diameter shaft is supported by a bearing 3 in. in length with a diametral clearance of 0.004 in. It is lubricated by oil that at operating temperature has a viscosity of 5 mreyn. The shaft rotates at 1800 rpm and carries a radial load of 1200 lb. Estimate the bearing coefficient of friction and the power loss using the Petroff approach.