A Yoyo Can Spin As Fast As A Formula 1 Engine
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Ten steel balls roll between the inner and outer rings within a yoyo’s shell. They work together to reduce friction, allowing the yoyo to keep spinning at the bottom of the string for over 10 minutes.
MACHINES: HOW THEY WORK
Thursdays 10/9c on Science
http://www.sciencechannel.com/tv-shows/machines-how-they-work/
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MACHINES: HOW THEY WORK
Thursdays 10/9c on Science
http://www.sciencechannel.com/tv-shows/machines-how-they-work/
Subscribe to Science Channel:
http://bit.ly/SubscribeScience
Check out SCI2 for infinitely awesome science videos. Every day.
http://bit.ly/SCI2YT
Download the TestTube app:
http://testu.be/1ndmmMq
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