【简答题】A hollow shaft has an outside diameter of 35 mm and an inside diameter of 25 mm. Compute the torsional shear stress in the shaft when it is subjected to a torque of 560 N·m.
【单选题】The hollow 6061-T6 aluminum shaft has an outer and inner radius of co 60 mm and ci 20 mm, respectively. The angle of twist of end A is ( ).The flexible support at B has a torsional stiffness ...