A force F $=45,000$ N necessary to rotate the shaft at uniform speed is shown in

Fig$\mathrm{.}1.$ The crank shaft is made of ductile steel whose elastic limit is $207$MPa, both

in tension and compression. With Elastic modulus E $=207$ GPa, Poisson$$s ratio $\backslash$gamma

$=0\mathrm{.}25,$ determine the diameter of the shaft, using the maximum shear stress

theory and distortion energy theory. Use a factor of safety N $=2.$ Consider a point

on the periphery at section A for analysis