A tentative design for full journal bearing calls for a diameter of 75 mm and a length of 125 mm to support a load of 20 kN. The shaft is to operate at 1000 rev/min. It is desired to operate at a bearing surface temperature not to exceed 75C in a room temperature of 35C. The oil used has a viscosity of 0.01 kg/m-s at 115C. Coefficient of friction is 0.00353. The heat generated is (in Watts) (a) 277 (c) 418 (b) 325 (d) 492