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DSN Animation: How do ball bearings work?

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Published on Mar 8, 2011

In this Design Squad Nation animation, Judy explains how the use of small steel balls can decrease friction and increase efficiency in a bearing, allowing a wheel to spin freely. For more Design Squad Nation fo to http://pbskids.org/designsquad


Like cars? Watch this clip and learn to build your very own balloon-powered car! http://youtu.be/K8hu5Y-9AZ8

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