So this might be a pretty simple question, but having no experience outside of TF2 mapping, I am unfamiliar with the physics systems. Perhaps there is a better option besides that though. What I'm trying to do is put a crane claw, "holding" a barrel, lightly swinging back and forth in a detail area. Not a huge movement, just a gentle back and forth swing, like it's still coming to rest. It would be pivoting from the top of it, and only doing a small back and forth swing, with a barrel parented to it. What is my best course of action to get this effect?