Analyze a steel shaft with an ultimate strength of 84 kpsi and fully corrected endurance limit of 26 kpsi if it undergoes a bending stress with mean and amplitude stresses of 8 and 8, respectively, while also undelzoing a torsional shear with mean and amplitude stresses of -12 and 10, respectively. Assume there are no stress concentrations or axial loads. Neglect yielding and use theGoodman failure criterion if needed. Report either the fatigue factor of safety if it is predicted to have infinite life, or the number of cycles to failure in thousands of cycles (N/103).