Description

JointSpring is used add a spring force to HingeJoint and PhysicsMaterial.

using UnityEngine;

public class Example : MonoBehaviour
{
    void Start()
    {
        HingeJoint hinge = GetComponent<HingeJoint>();

        // Make the spring reach shoot for a 70 degree angle.
        // This could be used to fire off a catapult.

        JointSpring spring = hinge.spring;
        spring.spring = 10;
        spring.damper = 3;
        spring.targetPosition = 70;
        hinge.spring = spring;
    }
}

Properties