How do figure skaters exploit Newtonian physics when they spin?

Legendary MIT physics professor Walter Lewin describes some of the science that will be in action during the Winter Olympics in Sochi. In less than 100 seconds, he explains how ice skaters use their arms to moderate their moment of inertia, which in turn affects the speed of their spins. Visit physicsworld.com for more videos, webinars and podcasts.
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