The C-O-M motion is monotonic, not constant. On Sun, Aug 12, 2018 at 11:34 AM, H LV <hveeder...@gmail.com> wrote:
> Nifty physics demo: > > Two carts are connected together on an air track with a spring. Under > bright lights you can see the coupled oscillation of the carts back and > forth, but under black lights you can see that the center of mass moves at > a constant velocity. > > https://www.youtube.com/watch?v=amfw2nABke4 >
