Aluminum rod with outside diameter O.D. = 10.0 mm is snuggly placed
between two stainless steel walls at T = 100 deg-C, that are
separated by a distance L0 = 2.00 inches apart, and the rod is
allowed to heat from room temperature (20 deg-C) to the wall
temperature T = 100 deg-C. Calculate the thermal stress imposed on
the rod, and also calculate the force that the rod exerts on the
walls, once it is at 100 deg.-C.