Many people don't know too much about angular momentum—and that's fine. But what about figure skaters? Whether they understand the concept of angular momentum doesn't matter but they use it in one of ...

Consider the rotor of a gyroscope. The rotor is attached to a frame that is rotating about a fixed vertical axes with a constant rate of ω 1, and with the rotor rotating relative to that frame at a ...

Gymnastics is an extremely difficult sport, but some people make it look easy. Step forward Simone Biles, who hit a Yurchenko double pike—considered the “hardest vault in the world”—during the ...