In Case 1 and in Case 2 the three identical acrobats have the same total mass. Suppose the identical acrobats weigh 150 pounds each. In both cases you have 450 pounds total weight. But in Case 2 one of the acrobats has three times as much weight (450 lbs) on his feet as he did in Case 1 (150 lbs). Yet the weight on the gym floor is 450 pounds in both cases.
Since you concede that the acrobat on the bottom has more stress on his feet can't you concede that the shot at the bottom of a shot column would receive more stress than that at the top of the shot column? That that shot at the bottom would have more weight on it than the shot at the top of the column during an acceleration that takes it from stationary to 1200 fps in a fraction of a second?
Last edited by AmarilloMike; 04/14/16 09:30 PM.
