in news:2d0brtk13k51jdgk4h98hajm1d5gh0db4g@4ax.com Peter Popov wrote:
>>The shape it makes is a caterary
>
> Isn't it a parabola?
>
>
http://www-groups.dcs.st-and.ac.uk/~history/Curves/Catenary.html
Ingo
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