Easy use engineering software

[thewipyk]

Hello guys!

For my Phisics project, I'm looking for something, that which I can model, "simulate" different movements of object. 
Let me show you through an example: There are basic objects, like rods, strings, hinges, springs etc. From theese, I can build whatever I want (for example a retractable landing gear), and the program simulates how it would work. 
Kinda like machines in besiege, but something more precise.
I answere questions of something is not clear.

 

Thank you in FW.

[The Official Czex]

Blender. While not easy, it's free and the learning curve is not too steep.

[iamdarkyoshi]

Sketchup has a physics plugin, sketchyphysics. I have not used it in years though

[W-L]

-SNIP-

 

Solidworks can do all of that and more but is a bit hard to grasp if you never used 3D modeling software.