The allowable shear stress for each bar shown in Figure P6.102/103 is 75 MPa. Determine (a) the largest torque T that may be applied to each bar. (b) the corresponding rotation angle at the free end...

The allowable shear stress for each bar shown in Figure P6.102/103 is 75 MPa. Determine

(a) the largest torque T that may be applied to each bar.

(b) the corresponding rotation angle at the free end if each bar has a length of 300 mm. Assume that G = 28 GPa.