2d Modelling Software

[enwar3]

I'm building a static cantilever type construction, and I'm trying to find a 2d modelling program that will help me with just forces on each leg/bracing of the structure. Basically, I'm trying to find a program that will make a force-diagram, but I can't find one for cheap.. I just need it for one thing so I don't want to buy an entire program or subscription.