Multiple forces affecting different geometries, together.

Hi guys,

I'm working on a definition with kangaroo but I can't carry it on cause i'm in trouble:

I'm trying to use different forces together (i.e. spring and power law) affecting different points in the same definition, but in the final result the imposed relations don't work.

To better understand the problem take a look to the attached definition.

I'm thinking it in the wrong way?

Thanks for help.