Problem 2 A stepped steel (G=80 GPa) shaft (all solid rod) has the dimensions and is subjected to the torques shown below. Determine (1) The maximum shear stress (2) The rotation of a section 2m with respect to wall A (3) The rotation of a section C (2.5m) with respect to wall A (4) The rotation of a section D (4.5m) with respect to wall A The rotation of the section at the right end E with respect to wall A 1 m 1.5 m 35 kN-m 160 mm 100 kN-m 100 mm 20 kN-m 50 mm B C D 2 m E 0.5 m 5 kN-m