The given steel shaft sees 5 kN and 7.5 kN loads as shown acting along the x and z axes respectively. The bearings at A and B exert only x and z components of force on the shaft. The gears are also made of steel and are 1.25 cm thick. (cite others in your design as required) max material temperature = 150 deg F machined shaft and gear surfaces there are people in vicinity of the shaft/gear assembly Shoulder fillets where gears attached have a radius of 5 mm. periodic inspections utilize dye penetrant to reveal flaws as small as 0.5 mm. The torsional stress is steady (midrange T_m = 0) The shafts experiences completely reversed bending loads (midrange bending moment M_m = 0) Use your engineering judgement on other required assumptions (safety factor, etc.) A. Determine the shaft's minimum diameter using a suitable Static failure criteria for safe operation to the nearest mm. Show all required torque, shear, and moment diagrams in your analysis. Choose an initial steel alloy to do this analysis. B. Estimate S'e and fully corrected Se for this shaft based on initial steel alloy above. C. Determine the shaft's minimum diameter using a suitable Fatigue failure criteria for safe operation to the nearest mm