Greg Anthony wrote a limited edition book back in the 1980’s that helped me understand how we use centrifugal force in the golf swing. The golf club moves in a curvilinear motion (part circular and part linear). We have come to know this as centrifugal force. Many of you are somewhat familiar with this concept. Whirling a rock on a string, the rock pulls away from the center. If the string breaks the rock would move at right angles to where the string broke, not in the direction of the string. Or when David killed Goliath…What has often been described as a “fictitious” force is actually a “tug of war” between Newton’s First Law of Motion and his Third Law of Motion.
Discounting the ever-present effects of gravity and friction, The Law of Inertia: There is no change in the motion of a body unless a resultant force is acting upon it. Specifically for this example, an object that has been set in motion will continue in motion and in a straight line until acted upon by another force.
If a second force acts upon the moving body at right angles to its path, it will be deflected from its rectilinear line, and its motion will become curvilinear. If a clubhead were set in motion in outer space it would continue in a straight line indefinitely. Once we attach a clubshaft to the clubhead and hold on to the opposite end of the shaft, the head would no longer move in a straight line because its forward motion would be constantly confined (deflected or constrained) by the clubshaft.
According to our friend Sir Newton (who IMO should receive and honorary degree in Golf Stroke Engineering from TGM) “the constant pull that constrains an object from its straight line path and compels it to move along a curve is called ‘centripetal force’ (centrum, center: petere, to seek).” The pull of centripetal force, as provided by the clubshaft, compels the clubhead to move in a curved path.
Sir Issac now enlightens us with his Third Law. For every FORCE there is an opposite and equal FORCE OF REACTION. Note, it does not say for every action…it says for every FORCE. In REACTION against this change in motion the object pulls outward on the shaft with a force called centrifugal REACTION.
When an object, not free to move is acted upon by an external force, it is pulled out of its natural shape, resulting in an elastic reaction in an attempt to resume its normal shape.
A force of REACTION is exerted by the reacting object, not on it. The resistance, that a moving body offers to deflection or constraint from a straight line, is commonly know as centrifugal force (Centrum, center: fugere, to flee from).
Mr. Kelley understood this when he wrote TGM. I have been using the term Centrifugal Force for years. If No-Mind wants to bash me for using it, fine. Just know that one of my students won three consecutive state open championships this past year using Centrifugal Force and countless other have improved their games with the same concept. I don't say that to impress you, but to impress upon you that the concepts presented by Mr. Kelley really work. In the end, that is all that matters.
BTW, Michael (Sligo33) if you want to talk about "tiding one over", I will remind you that you and I and Rob (BBAX) spent alot more time looking into our beers and vodka tonics than we ever did looking into our coffees.
Greg Anthony wrote a limited edition book back in the 1980’s that helped me understand how we use centrifugal force in the golf swing. The golf club moves in a curvilinear motion (part circular and part linear). We have come to know this as centrifugal force. Many of you are somewhat familiar with this concept. Whirling a rock on a string, the rock pulls away from the center. If the string breaks the rock would move at right angles to where the string broke, not in the direction of the string. Or when David killed Goliath…What has often been described as a “fictitious” force is actually a “tug of war” between Newton’s First Law of Motion and his Third Law of Motion.
Discounting the ever-present effects of gravity and friction, The Law of Inertia: There is no change in the motion of a body unless a resultant force is acting upon it. Specifically for this example, an object that has been set in motion will continue in motion and in a straight line until acted upon by another force.
If a second force acts upon the moving body at right angles to its path, it will be deflected from its rectilinear line, and its motion will become curvilinear. If a clubhead were set in motion in outer space it would continue in a straight line indefinitely. Once we attach a clubshaft to the clubhead and hold on to the opposite end of the shaft, the head would no longer move in a straight line because its forward motion would be constantly confined (deflected or constrained) by the clubshaft.
According to our friend Sir Newton (who IMO should receive and honorary degree in Golf Stroke Engineering from TGM) “the constant pull that constrains an object from its straight line path and compels it to move along a curve is called ‘centripetal force’ (centrum, center: petere, to seek).” The pull of centripetal force, as provided by the clubshaft, compels the clubhead to move in a curved path.
Sir Issac now enlightens us with his Third Law. For every FORCE there is an opposite and equal FORCE OF REACTION. Note, it does not say for every action…it says for every FORCE. In REACTION against this change in motion the object pulls outward on the shaft with a force called centrifugal REACTION.
When an object, not free to move is acted upon by an external force, it is pulled out of its natural shape, resulting in an elastic reaction in an attempt to resume its normal shape.
A force of REACTION is exerted by the reacting object, not on it. The resistance, that a moving body offers to deflection or constraint from a straight line, is commonly know as centrifugal force (Centrum, center: fugere, to flee from).
Mr. Kelley understood this when he wrote TGM. I have been using the term Centrifugal Force for years. If No-Mind wants to bash me for using it, fine. Just know that one of my students won three consecutive state open championships this past year using Centrifugal Force and countless other have improved their games with the same concept. I don't say that to impress you, but to impress upon you that the concepts presented by Mr. Kelley really work. In the end, that is all that matters.
BTW, Michael (Sligo33) if you want to talk about "tiding one over", I will remind you that you and I and Rob (BBAX) spent alot more time looking into our beers and vodka tonics than we ever did looking into our coffees.
BTW, Michael (Sligo33) if you want to talk about "tiding one over", I will remind you that you and I and Rob (BBAX) spent alot more time looking into our beers and vodka tonics than we ever did looking into our coffees.
I'll say: Here's a snapshot taken October 25, 2008, from our LBG Homecoming Classic at Cuscowilla.
From L-R:
Paul Hart, PGA, Australian Teaching Legend;
Neil Kynaston, Amateur Extraordinaire and long-time friend of LBG, Orlando;
Drew Chapman, our own Drewitgolf, Head Professional, Highland CC in Attleboro, Massachusetts, and our PGA of America hero;
Rob Baxter, PGA Section Champion, Drew's best buddy, and as BBAX, our cohort in crime;
Jeff Hull, one of the LBG Three Musketeers (I had camera duty, and Ted Fort was stilll eating ).
That picture can't be real. Only at low tide do I drink beer, but I do make exceptions.
Notice the unattended Vodka Tonic on the bar, lime still in the glass, waiting to be had, I believe that must be mine. And if anyone from Titleist is watching, notice I am upholding my staff contract...and...Jeff drinking Red Stripe...No Mon, can't be good for da' game.
Actually "A Great Time had by All" ! Don't miss your chance to be with Lynn and the Gang at the next get together. You will laugh, improve your game and have the time of your life.
BTW, Paul needs to stop hanging out with a cast of characters that include Neil. Paul is way too nice and there is a waitress looking to get in touch with Neil . Thankfully I have fellow A.I. Rob Baxter (BBax) to keep me grounded. Whats that?...Its my round?...got to go...talk to you later...
That brings back some great memories.....and I hope this event will be back again this year as well. To anyone that is thinking about joining us.........just do it! You will be among great friends and best of all, the best instructors (and people) in the world. Cheers!
o' Silver Surfer of the Truth!
). 
. Thankfully I have fellow A.I. Rob Baxter (BBax) to keep me grounded. Whats that?...Its my round?...got to go...talk to you later...
Hybrid Mode
