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Who will have the last word .

Fri, Nov 22 2024 2:32 AM (1,655 replies)
  • craigswan
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    Fri, Dec 8 2023 7:47 AM
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  • craigswan
    31,819 Posts
    Mon, Dec 11 2023 9:10 AM
    A nerdy mathematician was riding his Segway in a circle when he realized his outer wheel was traveling twice as fast as his inner wheel. If the wheels are 20″ apart, what was the diameter of the outer wheel's track?
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    Mon, Dec 11 2023 9:14 AM
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  • ozysouthpaw
    3,003 Posts
    Tue, Dec 12 2023 1:43 AM

    craigswan:
    If the wheels are 20″ apart, what was the diameter of the outer wheel's track?

    I was never the best at maths at school, in fact I'm still waiting to use a lot of what I studied in Year 12 which was 40 years ago but I'll take a stab in the dark & say 40"?

  • craigswan
    31,819 Posts
    Tue, Dec 12 2023 5:26 AM
    For the outer wheel to go twice as fast as the inner, the circumference of the outer track must be twice that of the inner track. A circular track's circumference is directly proportional to its radius. We know that the distance between the inner and outer tracks is 20″, therefore for the outer radius to be twice the inner radius, the inner radius must also be 20″. 20″ + 20″ = 40″ radius for the outer track, or 80″ diameter..
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    Tue, Dec 12 2023 7:19 AM
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