*5-72. The 80-mm diameter shaft is made of 6061-T6aluminum alloy and subjected to the torsional loadingshown. Determine the angle of twist at end A. 5-82. The shaft is made from

a solid steel section ABand a tubular portion made of steel and having a brasscore. If it is fixed to a rigid support at A, and a torque ofT = 75 N m is applied to it at C, determine the angle oftwist that occurs at C and compute the maximum shearstress and maximum shear strain in the brass and steel.Take Gst= 80 GPa, Gor = 40 GPa.%3D%3D