The torsional assembly shown in Figure P6.78/79 consists of a solid 60-mm-diameter aluminum [G = 28 GPa] segment (2) and two bronze [G = 45 GPa] tube segments (1) and (3), each of which has an outside...

The torsional assembly shown in Figure P6.78/79 consists of a solid 60-mm-diameter aluminum [G = 28 GPa] segment (2) and two bronze [G = 45 GPa] tube segments (1) and (3), each of which has an outside diameter of 75 mm and a wall thickness of 5 mm. If concentrated torques of T_B
= 6 kN-m and T_C
= 10 kN-m are applied in the directions shown, determine

(a) the maximum shear stress magnitude in bronze tube segments (1) and (3).

(b) the maximum shear stress magnitude in aluminum segment (2).

(c) the rotation angle of joint C.