The Rigid Body constraint creates a Rigid body using the specified sources.
The Rigid Body constraint requires the following objects:
An asset, model, or other object to be placed at the center of all source objects. This is also known as the “Child” object.
Sends translation information to the constrained object. This is also known as the “parent” object.
When more than one source is specified, the constrained object is placed at the mid-point between all source objects. Although the sources do not send rotation information, the placement of each source affects the translation and rotation of the constrained object.