Figure 12.24 shows a circular elastoplastic shaft with yield strength in shear , s...

Figure 12.24 shows a circular elastoplastic shaft with yield strength in shear , shear modulus of elasticity G, diameter d, and length L. The shaft is twisted until the maximum shearing strain equals 6000 . Determine (a) the magnitude of the corresponding angle of twist ; (b) the value of the applied torque T. Given:L = 0.5 m, d = 60 mm,G = 70 GPa, and = 180 MPa.