[ATM] Second Thoughts on Mirror Support

[jonah at eecs.berkeley.edu (Jeff Anderson-Lee)]

Stuart Hutchins wrote:

>How did Nils Olof Carlin get the sling force (when the sling pulling at a
>slight up-angle) into Plop?
>
Beats me. Nils?

>Just for rough numbers, could the pivot points be offset to produce uneven
>supports forces similar to what would be produced by the sideways component
>of mirror weight?  The resulting pattern would not be rotationally
>symmetric.  But I see on your pages of 12 point patterns some systems that
>are not symmetric. Number 12j, in particular, has two short vertical bars at
>the top and bottom.  Can the pivots of those bars be moved from 50% up to 67
>or 75% ?  That would produce the "S" bending forces.
>
>The goal would not be an exact deformation plot for Steve's cell, but a
>general idea of how bad the "S" shape becomes.
>
Plop tells you where the pivots go, rather than the other way around.  
(You specify the parts relationships, and it places the pivots.)

It will accept uneven force definitions, but only in a symmetrical 
fashion, not differently at the top and bottom.

Jeff