Okay, another interesting example would be,

there's a small mass and a stiffness and a damping,

and a big mass, and a stiffness, and a damping.

But I have a field, massless field, and

that is moving through this rough surface, that corresponding to,

as I mentioned earlier, I have a car over here and here.

And there is a mass stiffness, and this is moving around.

If I have interest on having some stiffness

corresponding to the suspension system,

the stiffness is corresponding to the stiffness

that has to do with the seat, and so on and so on.

But my objective is to have the motion of this,