The AM1004-T61 magnesium tube is bonded to the A-36 steel rod. A torque of 5 kN·m is applied to end A. The maximum shear stress in steel is 86.5 MPa and in magnesium 41.5 MPa.

a) The torque applied to the magnesium tube
b) The maximum shear stress in the magnesium tube
c) The material properties of the steel rod
d) The torque required to yield the steel rod