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One of the corner stones of TGM is geometry. Pure TGM believe is that the lead shoulder constitutes the center of the swing. Hence concepts such explained in my linked article should be of great interest as it refines considerably the concept of what actually constitutes the center of the golf...

Modern video, even swing vision video, will not allow readily to infer the precise trajectory of the club head through the impact zone. Using graphics driven by mathematics it is more convenient to look at impact trajectories. A possible golf swing, using a three segment golf model, consisting...

Whilst working on the ‘triangle’ I generated this figure of the vector display of the forces acting through the various joints when acted upon by a central torque. I thought that some might appreciate its intriguing artistic quality. ;)

Weight shift is usually thought to be induced by a lateral motion of the lower body, it can however have various causes. Let’s have a closer look at weight shift in a golf swing.

There is a bit of mystique involved evoking mother earth as a source for power in a golf swing. Readily done but not readily explained. The earth is simply a big mass and the golfer just a tiny mass equipped with some muscles to activate the various parts – nothing really very mystique. What is...

The trampoline effect is present in sports where striking with an implement occurs such as for instance badminton, tennis, hockey, baseball and golf. It is not really that there is a spring effect, but rather that it allows a somewhat better transfer of kinetic energy. It is particularly...

Brian showed a refreshing willingness to change his mind and I thought it to be useful to put in one post all the necessary information for anyone who wants to make up his own mind with regard to matters dealing with the physics of impact . Colliding objects, during impact, do generate very...

There is the notion of resistance to impact deceleration. We have also the intuitive notion that one can somehow increase the effective striking mass of the clubhead. Burner has now added another version, i.e., increasing the duration of collision, leading to increased velocity. Hence, he...

In the thread ‘A Helping Hand” the discussion gravitated around the idea of resisting impact deceleration. Several times there was mention of a heavy hit, dragging a wet mop, swinging slow and heavy, getting the body into the swing. There are really two notions intertwined, -1- applying torque...

Something I did a few years ago might be of interest. It shows how the inertial forces are working in the background and very useful if you let the swing take place instead of forcing it.

Yesterday I posted for the very first time on Yoda's site and it seemingly will be also the last - it got erased immediately. My post was however a very short, very simple and very polite question addressed to ThinkingPlus. Seemingly having posted on Brian’s site is all it takes to ban someone...

In two succeeding posts by ThinkingPlus Physics 101 answer ------- 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...

The CompuSport CD, “MODEL GOLF – Swing Like A Pro”, by Dr Ralph Mann, a biomechanics expert, has detailed instruction about the transition move. The lateral hip slid should start well before the shoulders have fully turned in the backswing. There is just one small problem. The associated...

The concept of plane(s) is essential in TGM. It actually started with Ben Hogan’s plane of glass and it has since then been mentioned in many books and articles. It is indeed very attractive to use one or more planes as it reduces complex 3D to a much simpler 2D environment. I remember once...

Figs 1 to 3 show the decomposition of the trail arm thrust into a wrist torque on the butt end of the handle and a lead shoulder torque. Figs 4 and 5 shows this equivalence more neatly. In a mathematical model there is hence much less apparent difference between a hitter and a swinger. For a...

Anyone curious about an efficient kinetic chain in action should have a close look at Justine Henin-Hardenne, playing presently in the French Open, Paris. Justine, a tiny slender lady, 5ft 5in, 120 lbs - been #1 for 45 wks - really whips the racket through the ball, with a delayed hitting...

Rob Atkins in his Golf Digest article - ‘The Swing of the Future’ - refers to a move which he called the ‘spine-tilt thrust’. “Most instructors will tell you the swing of the new golfer-athlete is one that synchronizes the swinging of the hands and arms with the turning motion of the body...

GLOSSARY AXE HANDLE/ROPE HANDLE Mechanical –Thrust against an Axe Handle can produce a centered motion. Against a Rope it cannot. Golf – The continuous thrust against the Clubshaft moves the Clubhead radially. (The Axe Handle procedure.) The initial Thrust accelerating the Clubshaft...

Jorgensen, author of the bestselling "Physics of Golf," dies at age 100.

Most likely anyone reading TGM will have a hard time understanding what exactly constitutes the difference between accumulator #2 and #3. The angles, associated with accumulator #2 and #3, are both defined by lead arm and shaft, but yet there is a very different related action. I had a look...