A steel (G= 80 GPa) tube with an inside diameter of 150 mm and an outside diameter of 175 mm is encased in an aluminum (G = 40 GPa) tube with an inside diameter of 175 mm and an outside diameter of 225 mm as shown in Figure 1. The tubes are connected at the ends to form a composite shaft. The shaft is fixed at A and subjected to a torque of 80KN.m. Determine: The maximum shear stress in each of the material and angle of twist if the length of the shaft is 10m. If the allowable shear stress in the steel shaft is 300 MPa and angle of twist is 0.02 radian, check whether the steel shaft will be able to resist the torque or not - demonstrate using factor of safety. . A 225 mm 175 mm Aluminium וחחו 150 Steel Figure 1 If the steel tube is solid, what will be the maximum shear stress in each of the material and angle of twist if the length of the shaft is 10m?