Consider the belt drive having a diameter of 150 mm that is mounted on the overhung end of a shaft, 30 mm from the nearest bearing. The stepped shaft is made of steel having Su = 965 MPa (140 ksi). The shaft diameter, d, is 30 mm. The bearing bore, D, is 36 mm. The fillet with a machined surface has a radius, r, of 3 mm. What is the safety factor with respect to eventual fatigue failure of the shaft? Ignore yielding. Motor 30-mm dia. shaft 30 mm 0.15 m dia. 14 KN belt tension 5 kN belt tension