7. Figure 7 shows a solid steel cylinder of diameter 50 mm that is a snug fit inside a hollow aluminum cylindrical sleeve of wall thickness 10 mm (shown in cross section). The two com- ponents are connected by a 12 mm diameter bolt which passes through a hole drilled along a diameter of the two cylinders. A torque 7 = 1000 N m is now applied to the end of the solid cylinder. Find the average shear stress in the bolt. 10 bolt 50 I 200. 250