A simply supported shaft shown below is subjected to a constant load P, a distributed load p, and a time-varying torque, Tmin to Tmax. Find the shaft diameter for a factor of safety of 2 for fatigue with the following information for the steel shaft.
Se = 180 MPa, Sv = 450 MPa, Sut = 600 MPa
P = 4 kN, p = 10 kN/m, Tmin = -100 N-m, Tmax = 200 N-m
a = 500 mm, b = 750 mm, c = 1000 mm, d = 200 mm, l = 1050 mm
