Is anything that is not created by the chemical process? ....yeah! Anything has the mechanical forces, dynamic ideas, those are the physics department.

How you swirl, how you turn, how you bounce, how you hit a wall, how you do a trambolin? 

Leverage....lifting. Those are a word. Ladder, level? 軸~重量

Your American fouding father and I on those Medical Boards stuffs, the scale. But there are a rolling feature of many teeth. By weight. Kinda of like the well.

Those are your physics department. Those are the mechanical basic 101.