A shaft of solid circular cross section has a diameter, d. The shaft is subjected to the torque, T, and compressive load, P, as shown in the figure. T=Pd/8 (A) Define the in-plane stresses on a material element on the shaft surface that is oriented such that the x-face is perpendicular to the load P. (B) Draw Mohr's circle and plot the state of stress in part A on the circle. (C) Use Mohr's circle to write expressions for the maximum and minimum normal and shear stresses on the surface of the shaft. 1