[no_mind_golfer]

While edification is generally speaking elusive golf forums provide endless amusement....

Here we have Jeff, who is completely clueless about simple physics terms and absolutely refuses to admit it (and he refuses to read links), spinning aimlessly. And then there is you BrentR whom I strongly suspect is just yet another poser.

You see scientists and engineers know the word is PHYSICS not fysics... they would NEVER make that blatant mistake or many of the others that scream out in your posts. Scientists and engineers generally make sense when they write and you don't.

Nevertheless BerntR I suspect you do know a tiny little bit about transducers (got a job as an aid in a lab did you?) ... I suspect you may even know a tiny little bit about vibration measurment or perhaps acoustics and you are trying to transfer that modicum of superficial extremely cursory knowledge to "your" analysis of the golf swing. This is why we see you tossing out of big sounding totally irrelevant, totally inappropriate terms like "harmonic" or "q factor". See when all you have is a hammer everything looks like a nail... when you are a surgeon the only solution is to operate.

Well guess what.... the golf swing is a gestalt... an event... it is not an oscillating system with or with out damping. Try again BrentR...YOUR MODEL DOESN'T FIT! No energy is stored in the golf swing anytime anywhere.

Oh BTW merry Christmas!

Oh really ......

Energy storage is a very essential topic in a lot of mechanical engineering subjects like noise control and vibration damping. Transducer technology is a subject I know pretty well where energy storage is an essensial challenge. In many cases the efforts are about minimizing energy storage. In other cases it's about tuning. Typical efforts to reduce energy storage in mechanical systems is to reduce mass and add mechanical resistance.

Energy storage is often described with a Q-factor that deals with the ratio of reactive (energy-storing) components to resistive (energy-dissipating) components. http://en.wikipedia.org/wiki/Quality_factor

The down swing converts potential energy (related to g) to kinetic energy, that's true. In addition it stores the kinetic energy that is added by the player working the club. Moving mass is one of the essential ingredients. Most of the mass in the clubhead is there to help the player accumulate energy until impact.