Rigidbody.useConeFriction  

var useConeFriction : boolean

Description

Force cone friction to be used for this rigidbody.

This insures that all contacts involving the actor will use cone friction. This will however have a negative impact on performance. By default this is off and a much faster and almost as good approximation called pyramid friction method is used. In most cases it is recommended to leave this value off.

rigidbody.useConeFriction = true;

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    void Example() {
        rigidbody.useConeFriction = true;
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    def Example():
        rigidbody.useConeFriction = true