In addition to constraining two or more rigid bodies, you can also constrain a single active rigid body to a global position in space. You can either pick a spot in global space or use the rigid body's center as the constraint position.
Choose any of the three following workflows:
Choose a constraint from the Create Rigid Body Rigid Constraint menu in the Simulate toolbar: Hinge, Ball and Socket, Spring, Slider, or Fixed. The constraint object is created.
Left-click the spot where you want the constraint to be positioned — the constraint object goes there.
Left or middle-click to pick the active rigid body. The constraint object is attached to this object's center.
Choose a constraint from the Create Rigid Body Rigid Constraint menu.
The constraint object is created at the position of the rigid body's center.
Except where otherwise noted, this work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License