[12 piece bucket]

Well, here is what happens when clubhead meets ball. This may not mean much relative to swing, but it will give everyone something to start with.

Mball * Vball_after + Mclub * Vclub_after = Mclub * Vclub_before (the before and after refer to impact)

Basically, since this is an elastic collision, momentum is not strictly conserved, but it is close enough for our purposes. You can also approximate Mclub with the mass of the clubhead alone since the impact interaction occurs over such a short time.

How about this Bosslady . . . So the primary lever assembly moves in a circle regarless of how it is driven huh? what? So that would be the case on the backstroke . . . smell me? So there is a certain amount of inertia of the club moving back. Then the player changes directions . . .

At this point is this where the whole deadweight inertia draggin' lil' bruva of clubhead lag pressure point pressure is loaded?

So then what? You continue to spin the flywheelz (dubz) or do you drive the stump?

Is the swinger manipulating Angular Momentum? While the Hitter is overcoming it by driving in a straight line?

What do the physics types say?