The steel shaft (E=30E6 psi, ?=0.25, G=12E6 psi) shown is in equilibrium under the torques shown. Ignore stress concentration effects and determine the maximum shear stress in Sections AB, BC, CD, and DE and the angle of twist at the free end, E. Express your answer in terms of ?.
-2' DIAM. SHAFT
TB=200? IN-LB
TC=800? IN-LB
TD=300? IN-LB
TE=100? IN-LB
1" DIAM
HOLE
10"6"6"10"