marabou wrote:
> 
> here is my picture. seems the string looks ugly and unrealistic. isn't it?
> 

It's not that easy if you want precise calculations.  You must have
correct information on stiffness of the string and friction between nail
and string and on how it's mounted to the picture (and of course the
weight of the picture).  

If you assume the string is completely drooping(?) things are much easier
of course, you will only need to know the friction to find out how much
the picture is tilted at maximum.

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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