a hollow steel shaft with an outside diameter of 400 mm and inside diameter of 300mm is subjected to the torque of 300 Kn. The modulus of rigidity for the steel is 80 GPa. determine
a) maximum shearig stress in the shaft.
b) the shearing stress on a transverse cross section a the inside surface of the shaft
C) magnitude of the angle of twist in a 2 meter length