Getting ready to change one's moment of inertia by pulling in those books!
One side of the axle (handle) of the wheel is attached to a line hanging from the ceiling. Without the spin, this wheel would just rotate downward due to the torque of the force of gravity. However, with the spin, this wheel's spin axis rotates or precesses.
An object rotating will keep rotating unless acted upon by an unbalanced
The Levitron has a magnet in the wood base and a spinning magnet hovering above as shown. Just the right height has been found to balance the force of gravity with the magnetic force of repulsion. The spin makes this another top!
A great toy gyroscope! And Yomega, the omega of yoyos taken apart for study!
