a shaft with a diameter of 25 mm is loaded in bending and torsion such that m subscript a equals space 70 space n space times space m, t subscript a space equals space 45 space n space times space m, m subscript m space equals space 55 space n space times space m, and t subscript m space equals space 35 space n space times space m. for the shaft, s subscript y equals 560 space m p a. let k subscript f equals 2.2 and k subscript f s end subscript space equals space 1.8. what is the factor of safety based on static failure in the first load cycle?
