How to tilt the gameobject based of Input.Acceleration?

Hello,

I have a cube which I would like to tilt based of the Input. Acceleration. So I have a gameobject that is falling towards negative Y under force of gravity. Hence my Input will be from X and Z plane. What I am trying to do is, I am trying to get the face of the cube parallel to the surface of the iPad.

CODE:

     acceleration.x = Input.acceleration.x;

acceleration.y = Input.acceleration.y;

//To filter the jerky acceleration in the acceleration accel = Vector3.Lerp(accel, acceleration, filter * Time.deltaTime);

//Mapping accel -Y & X to game X & Y directions

dir = new Vector3(-accel.y, 0 , accel.x); //Limiting the 'dir' variable to magnitude 1; if (dir.sqrMagnitude > 1) dir.Normalize(); //EOF

So, from the above I have the vector which corresponds to the input. Could you please help me with this.

Thank you & Please.