maths question

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  • Umfriend
    Crabby Smurf
    • Mar 2001
    • 7308
    #16
    Yeah, it is amazing it is the same additional length of rope.
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      • Brian Ellis
        Super MURCer
        • Sep 1999
        • 9623
        #17
        Originally posted by VJ View Post
        My highschool teacher really drilled us with those factors... and it still seems to have effects...

        If you like maths, you'll love this one:
        Imagine a rope that fits tightly around the equator. Now, imagine a second rope that "floats" 1m above the first one, everywhere. How much longer is that rope? And what if we do the same with a rope around a tennis ball? (the answer is quite counter intuitive)
        Equator: about 6.28 m
        Tennis ball" about 6.28 m

        However, do you mean the inner diameter or the outer diameter of the rope toroid?
        Brian (the devil incarnate)

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          • cjolley
            Super MURCer
            • Aug 1999
            • 7672
            #18
            Originally posted by vj
            If you like maths, you'll love this one:
            Imagine a rope that fits tightly around the equator. Now, imagine a second rope that "floats" 1m above the first one, everywhere. How much longer is that rope? And what if we do the same with a rope around a tennis ball? (the answer is quite counter intuitive)
            Originally posted by Brian Ellis View Post
            However, do you mean the inner diameter or the outer diameter of the rope toroid?
            Right there you have the difference between a mathematician and an engineer.
            Chuck
             秋音的爸爸

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