The physics of the golf stroke is useless unless it is precisely aligned and that's why the golfing machine rocks so much . Physics is of force and motion, so in essence physics is what powers the stroke whether it be pivot or muscular thrust, but the geometry aligns the physics. The geometry is of the circle and the physics is of rotation.
Absolutely right, Mathew. This is the essence of G.O.L.F. -- Geometrically Oriented Linear Force.
The Linear Force produced by the Angular (circular) Motion of the Golf Stroke is the Line of Compression. That Line is straight...not curved. It is the Principle of Golf (2-0).
Through Impact, this Linear Force is Geometrically Oriented -- that is, geometrically aligned -- according to the Geometry of the Circle (Clubhead Orbit) and the employed Hinge Action (Clubface Alignment).
A Force geometrically aligned and controlled is efficient.
The Force and its constraining Structure constitute Mechanics.
For the Golfer, Feel is the equivalent of Structure, and its foundation is Educated Hands.
. Physics is of force and motion, so in essence physics is what powers the stroke whether it be pivot or muscular thrust, but the geometry aligns the physics. The geometry is of the circle and the physics is of rotation. 
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