| Mechanics > Rotational Dynamics > Rotational
|ring, chain, disk, or rod
As the rotator is turned, the ring will initially spin about a diameter. As the angular speed increases, the spin axis will change to that with the maximum moment of inertia which passes through the center of mass. Do the same with a rod or disk. A loop of chain will form a circle and spin like a lariat, as shown above.NOTES
Spin slowly at first or the string will twist.
These can all be done by hand, without the rotator.