Angular momentum is an object's moment of inertia times its angular velocity. If one of the latter two increases, the other decreases, and vice versa.

They actually thought it was some kind of trick. It is not a trick. Instead, this is an example of the angular momentum principle. If you want to try this yourself, I guess you are going to have ...

Speedy Spinning Spheres! Using spheres, cylinders, and straws, the Crew and Dr. Rob learn about inertia, velocity, and conservation of energy due to angular momentum. STEM Challenge: Angular ...

By Anthony Isola Learn more about Anthony on NerdWallet’s Ask an AdvisorToo many choices and inexperience with complex issues are two of the biggest.