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DSN Animation: How do ball bearings work?

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Uploaded by 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

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  • Just loved it , simple and so attractive...

    Many Thanks !

    God bless you

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  • balls O steel

  • lol 1 comment

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