True. You guys have now taken a fairly simple concept and covered it with sequins and flashing lights so that it is not recognizable. Another thread bites the dust, as far as I'm concerned.
Um, sorry about that. Just to be clear, I threw in some quantitative detail to clarify the relatively simple model. I wasn't hoping to make the model much more complex. Some people are naturally going to try to think the details of this through, and and even in a balls-bouncing-off-each-other-linearly model, it's not entirely intuitive what can happen physically. I dropped the analysis in because I had performed it -- for those who actually want to think the *simple* model through completely. It wasn't meant to be an entrée into rotational dynamics (no offense, Eric).