Math Is Fun Forum

{7/3}

Member

Registered: 2013-02-11

Posts: 210

Circle problem

A wheel has 2 circles,interior and exterior.the interior circle obhiously has smaller circumference.now suppose the wheel is rotated 5 times and it has crossed 10 m then the exterior circle's circumference is 2 m. But the interior circle is also rotated 5 times and it is also 2 m.so,both circles are same! How is it possible?

Last edited by {7/3} (2013-06-03 20:05:30)

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anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Circle problem

Here is the wiki page about that paradox:

http://en.m.wikipedia.org/wiki/Aristotl … el_paradox

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Nehushtan

Member

Registered: 2013-03-09

Posts: 957

Re: Circle problem

Fixing anonimnystefy’s link: http://en.wikipedia.org/wiki/Aristotle% … el_paradox

Interesting problem.

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anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Circle problem

Thanks, Nehushtan. Didn't even notice.

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“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.