DirtyBird,

Thanks mucho for the informative example.

When an aileron or wing is displaced, it is the unbalanced condition of the aileron which causes it to "lag" the other surface, thereby reinforcing the other surface's travel in its original direction. The originating surface then travels to its mechanical (for the moment) limit, "dragging" the secondary along, but leading it by XX degrees. Positive feedback loop. Balanced ailerons do not lag............

Kat: in your example, If I am picturing your example correctly, the two pieces of whatever if suspended at the ends of the "hinged" or "glued" axis would remain exactly where you left them.

Diss: You're Right on..........

Regards, C.E.