Rigidbody.centerOfMass

Description

The center of mass relative to the transform's origin.

If you don't set the center of mass from a script it will be calculated automatically from all colliders attached to the rigidbody. Setting the center of mass is often useful when simulating cars to make them more stable. A car with a lower center of mass is less likely to topple over.

Note: centerOfMass is relative to the transform's position and rotation, but will not reflect the transform's scale!

// Expose center of mass to allow it to be set from
// the inspector.
var com: Vector3;
var rb: Rigidbody;

function Start() {
	rb = GetComponent.<Rigidbody>();
	rb.centerOfMass = com;
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public Vector3 com;
    public Rigidbody rb;
    void Start() {
        rb = GetComponent<Rigidbody>();
        rb.centerOfMass = com;
    }
}