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You have a 40 inch wheel tow 20 inch wheel to a 5 inch wheel how many revolutions does the 5 inch wheel have to make to make the 49 inch wheel rotate 1revolution?

  • Physics -

    circumferences vary in the same ratio as the radii.

    since 40/5 = 8,

    the 5" wheel rotates 8 times for every rotation of the 40" wheel.

    extra credit: do they turn in the same direction?

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