[no_mind_golfer]

No....

COAM only applies to systems that are subject to a "CENTRAL" force. A central force is one which is directed through the axis of rotation. In the youtube Jeff attached, the spinning device is compressed and stretched by force with is acting THROUGH the axis of rotation. That is a central force.

Its would be impossible to argue that the forces generated by a golfer's muscles during the golf swing gestalt act in a direction which is through the "instantanous" center or axis of rotation. Therefore usage of the term COAM when discussing golf is wrong. COAM does not apply to the golfswing contrary to what some authors and their experts would have us believe.

no_mind

Quote By Jeff "However, I cannot understand how COAM can be involved in a system that is actively producing more energy. The concept of COAM only applies to a system where the amount of energy inputted into the system is fixed and the entire system either slows down or speeds up dependent on the distance of the mass of the revolving object from its central axis."

Just a clarification- For anyone studying movement and getting the wrong impression of the above quote.

1) When you consider the concept of Conservation of Angular Momentum as the total angular momentum always staying the same in a closed system and therefore, if you move mass further from the center of rotation then there is a slowing of the rotational speed- then you might agree with Jeff's quote and say " That doesn't exist in a system where you ARE adding energy.

2) When you consider the aspect of Conservation of Angular Momentum - that in ANY rotating system - when you move mass further from the center of rotation- that has a slowing effect on the rotational speed- you'll see that the principle stands true whether you are in a closed system or system where you are adding energy. The only issue is - how much mass has moved, how much slowing is that creating and when, where and how is the added energy affecting the overall result. When you keep that perspective in mind - then Jeff's quote can be very mis-leading, confusing, etc.

In summary, your thoughts on this thread Jeff are definitely worthwhile areas to explore - I just thought I would attempt to clarify this one area that stood out for me. The principle of conservation of angular momentum exists in every rotating system.