Beakman's World: Rotation Speed
00:14:32 - 00:18:57
Science → Physics → Rotational Inertia
Lester and Phoebe have a contest to see who can rotate an apparatus the fastest. The two apparatuses weigh exactly the same, but Phoebe wins because the weights on hers are closer to the middle. This demonstration explains how figure skaters can spin faster when they pull their arms and legs inward.