parameter constraints setting for suspended weight at ropes

[clingonboy]

Good day to all,
I am trying to simulate a suspended weight from ropes using the parametric design of autocad 2012.
a draft is shown in the attached file.
I can't understand what constraints/parameters I miss to make sure that the weight, when changing the length of the 2 strings, takes the correct position determined by the force of gravity.

thanks to the kind attention, cordial greetings.

 

[Giuseppe Mauro]

I don't think you can.
parameters are geometric constraints.
a certain distance is x, another distance is y, another distance will be (example) (x-y)*2

you want to insert mass parameters, you need a calculation program, not a drawing program.

 

[clingonboy]

I also had done your thinking but I thought maybe a way there was, I know the position of the baricentro of the weight I was carrying and I thought there was a way to define a geometric relationship between the parts in mado to simulate the thing.
also because indimendentally the size of the weight the position that assumes the body depends solely on its shape and position of the center.
I want to try to find some more

 

[Giuseppe Mauro]

Well, the shape is a little.
What matters is the location of the center of gravity.
but at the varying of the two strings, varies the baricentro/vincolo arm to, which is what generates the moment that must be balanced by baricentro/vincolo b.
and in addition the bond is not mechanically bound to weight, but it is a flexible rope, for which the baricentre/vincle distance to (the minimum distance between the two points), does not move along a circle arc, but is free to move everywhere in space, remaining the only length of the rope.

repeat the same reasoning for bond b and you will come to the conclusion that it is too complicated to describe constraints, for a pure design progrmma.