The 60-mm-diameter solid shaft is made of 2014-T6 aluminum and is subjected to the distributed and concentrated torsional loadings shown. Determine the angle of twist at the free end A of the shaft.

a) Apply torsion formula for cylindrical shafts
b) Calculate torque-induced deformation
c) Assess material properties of 2014-T6 aluminum
d) Determine the angular displacement at the free end