I remember seeing one of these in a science museum. The pendulum (ball on a long string) would knock over dominos. These were positioned in a circle around the endpoints of the green line segments shown in this picture.
+AADHITHYA AADHITHYA Install LINUX - KDE-Educational (or Mint 12) go to the "Software Centre" and a universe of free (animation, physics, etc.) software will open up 2 U. Otherwise, i will provide some guidance