Hurricane balls explanations

Classical mechanics studying motion of this type of objects as “rigid body motion” and has fairly complicated mathematics behind explanations of the phenomena. After spinning balls around their center (of mass) on the surface (preferably smooth and hard) balls will either stop very soon or continue to spin pretty steadily and fast, but it will be mostly rotational motion about common center line with some precession on one point of contact - one ball will be lifted of the surface! This rotation will last very long time due to very low friction at the pint of contact between hard surfaces. Hurricane name these balls get from the effect stream of air has on them applied in the direction matching rotation. It increase rotational speed! It was reported 30,000 rpm achieved speed. With higher speed top ball will rise higher (to some limit). When energy will be spent on friction and air drag, both balls will touch the surface and stop.

In essence what is happening when balls are given initial energy by rotating about their center is: due to presence of friction between balls and surface and minuscule imperfections on contacting surfaces (even if they are seemingly perfect) one ball will momentary lose contact with the surface and will be raised off of the surface by friction force moment due to loss of friction at the other point of contact.