Science of Golf: The Golf Swing

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NBC Learn, in partnership with the United States Golf Association, explores the science of golf. In this segment, the physics behind the golf swing are discussed and broken down with the help of 2010 U.S. Women's Open champion Paula Creamer and amateur golf standout Michael Miller. Visit http://www.nbclearn.com.

For daily updates from the United States Golf Association, visit us at http://www.usga.org, on Twitter (http://www.Twitter.com/USGA; http://www.Twitter.com/usopengolf) and on Facebook (http://www.Facebook.com/USGA; http://www.Facebook.com/USOPEN).

See also  Dynamic Golf Swing - Prevent Injury and Increase Power

Comments

High'd Society says:

do this same video with TIGER freakin WOODS, please!

jon chadwick says:

I'd like to add that just talking about torque actually isn't definitive enough. I suggest viewing Dr. Kwons video about Torque to better understand how it actually works.

Thomas Fraser says:

Looking inside the Golf Swing (copyright 2022)

Every professional golfer in the world does: The Crunch & Turn Golf Swing

Professional golfers know that their obliques are the central powerhouse needed in there every swing and that their shoulders; arms, hands, wrists and even their club head must leg behind from the very start of their backswing to post impact to their ball on their downswing

It is: The Perfectly Centered Pendulum Golf Swing that can be applied as hard as a golfer wishes for distances and accuracy. Or as softly as the golfer wish for closer targets

Unlike most amateur golfers; Professional golfers learned early to empty their head of parasitic swing thoughts as they simply using their obliques muscles one hundred percent of the time.

How? Why? When?

By starting their swing with their lead side obliques tilting their body; their trail side obliques stretches turning their body as they arrive on their trail side to their full backswing. And then from there they simply crunch with this trail side obliques as their lead side obliques stretches and turn their body back to their lead side to the full completion of their downswing .

The obliques are the central powerhouse in every golfer swing. It is: The Perfect Pendulum Swing that’s extremely accurate and repeatable. The obliques incredibly starts and stops the golfer swing as well.

Did you know that our obliques working together are both responsible to safely accelerating and decelerating the golf swing.

Our Obliques coils our body creating the torque and stored elastic energy needed in our downswing.

Think of these facts as well
1 Thé harder your obliques are working on the job; the further and straighter your ball will go. The softer your obliques works, the less distance your ball will go to your intended target
2 Club head speed at impact is the function of angular acceleration
3 Angular acceleration is the function of torque

The obliques are the only muscles inside our body that can produce the unique and required angular acceleration and deceleration that the Golf Swing requires.

Unlike the baseball swing that is vertical and horizontal the golf swing is neither: It is unique! It is oblique!

These great golfers shouldn’t mind as we look internally inside their body, imaging the power behind their great swings as I just explained it fully to you.

All great golfers especially Bryson D know that his obliques are the only muscles groups inside his body that will protect his spine and back for a lifetime of fantastic golfing

All great golfer swing along their target line regardless of the stance they take at setting up to their ball

The golfer choosing a neutral stance ( their body parallel to their target line ); swings along both their body line as well as down their intended target line

The golfer with either a closed stance or open stance should only swing down the line to their intended target and never along their body line as well

The Feeling of Greatest of the golf swing is finally out of the bag for all of us to share freely if we wish to

Cheers and good golfing to all.❤️😃👍⛳️

TeddyCavachon says:

The key to making the double pendulum effect and centripetal force work in a golf swing is the biomechanics of the side bend action in the downswing. Side bending at the top of the backswing causes the the hands to drop and right arm tuck back in to body at the same time the club head is still moving forward at the backswing the action Harvey Penick called “The Magic Move”.

When it comes to torque one should study and learn the action of Ben Hogan. He created torque in the arms for stability in the way he gripped club in the air and lowered it with “towel wringing” action. He never completely grounded the club, instead allowing it to hang and find ideal pendulum equilibrium with GRAVITY before swinging and using the mass of the club head extended out over the feet with arm and club shaft as a counter balance which allowed him to sit down over his heels with lower legs vertical which is critical for a balanced swing plane in the downswing. Recreational golfers slice the ball because the club force pulls them on their toes or pulls hand further away from body than at address. Hogan’s grip and address technique prevented both from happening why he was a legendarily consistent ball striker.

He set his back foot square then flared his feet inside his shoes to pre-torque his back leg in the backswing. At the point in the backswing when the hip turn maxed out in Hogan’s wide, sweeping, mechanically efficient takeaway at 45° closed and the club head forced the wrists to swing the club mass up (very predictably) his straight back leg was torqued to the max, ready to unwind and power the downswing even in his partial swing shots, a significant difference from the shoulder centric swing style taught today which used over a lifetime causes back injuries.

In Hogan’s swing the momentum generated in the wide backswing combined with the V^2 centripetal generated whipping club up around hands pulls the club and hands up effortlessly and shoulders 45° past hips EFFORTLESSLY bringing the club head mass up directly over the center of rotation and balance between the heels, which is what is needed to set up a naturally balanced path (i.e., club seeking gravity finding its own path) back down to the ball. Hogan fired his coiled back leg and hips first laterally then rotationally to pull the mostly passive shoulders down lagging 45° progressively adding SIDE BEND to keep hands moving forward faster than the shoulders they are attached to, which is required by the physics to maintain the power stored in the shaft bent with the “magic move” at the start of the downswing.

If you analyze the relative movement of hips, shoulders and hands in a well executed double pendulum swing you will see his sequence:

1) hips stop and lock 45° open because back foot prevents further rotation until heel is lifted;

2) side bend is maximized as hips stop causing shoulders to slow down and become and become the pivot point for the left arm mass to whip forward separating from chest towards target, causing bent right arm guiding club to be pulled straight accelerating the mass of the left arm down target line dragging club down behind. [This is the part of the swing recreational golfers get wrong. Instead they whip right shoulder at target because they do not understand or use the side bend action in their downswing.];

3) At the point hands drop below waist the limitation of “thumb up” radial deviation in the golfer’s wrists causes the club head mass being pulled down directly above the hands to swing outward outside the hands which is what allows GRAVITY to start accelerating it around the hands to get the club mass moving in a circle (the second pendulum) around the hands at the same time the entire left arm rotates causing it to swing back towards the target line. Some golfers have more flexible wrists with more ability to “lag” and delay the release of the club head ( i.e., prevent premature casting) than others giving them a natural biomechanical advantage. Snead could pull thumbs back and touch forearm and Hogan was nearly as flexible in his wrists.

4) Gravity acting on the club head accelerates it around the hands down to the ball. The mistake made by recreational golfers at that point of the swing is moving the hands forward too quickly, what the locking up of the hips and side bend action prevent. The club needs time and space to allow the attraction of club head mass to mass of earth to whip it around the hands—a greater amount of time and space for longer shafted clubs than shorter, why the hosels are angled differently requiring ball to be placed further back in stance for shorter clubs due to hosel angle and further forward with longer ones.

All the lag needed in the golf swing between hands and club head is engineered into the hosel angle of each club, something 99.9% golfers don’t realize because nobody explains the combined cause and effect of how the body biomechanics need to interact with the physics in a way they understand intellectually. The force of gravity, which is what the takeaway and backswing work against and what powers the downswing is seldom mentioned but knowing how to use gravity is the key to an efficient repeatable and well balanced golf swing because gravity is the most consistent force on our planet. Why there will never be any golf courses in outer space 😂

The “sustain the lag” style of swing is not the most efficient utilization of the physics something a few golfers — notably Harry Frankenberg, Moe Norman, and Ben Hogan — realized intuitively if not intellectually. Those three discovered a way to lock their wrists into full ulnar deviation BEFORE impact which allows maximum acceleration during the compression of the ball on the face and automatically squares the face to the target as the wrists lock. It makes hitting powerful shots dead straight mechanically simple and as repeatable as the “Iron Byron” robot the USGA uses to test conformity of equipment. Fortunately the USGA has not figured out (yet) how regulate how a golfer move their body. 😄

A M says:

The roller coaster analogy confuses me.

DJ's Half marathons says:

Besides technique, you need :
Flexibility, strength and timing

John Clare says:

This particular tutorial , Jοmtοnο Naha (Go ogle it) launched me Golf swing classes. Presented in the guide are significant advices like selecting the proper club model and length based on your arm length, height, and shoulder width. Through the lessons in the tutorial, I`m able to reduce my handicap to 15 from 22 in a year.

NICOLPORK says:

This particular guide introduced me Golf swing classes. Highlighted in the guideline are important guidelines such as choosing the appropriate club model and length based on your arm length, height, and shoulder width. The lessons have been really helpful, allowing me to lower my handicap from a 22 to a fifteen in the last year.. You can discover this book by Google. It calls Logan Ballοyshot
Hope

Real HIFI Help says:

4:45, that will wake up the guys in the clubhouse hihi.

jesus mora says:

Thanks for the Video clip! Forgive me for chiming in, I am interested in your opinion. Have you tried – Paneevelyn Swinging Clubsman (do a google search)? It is a smashing exclusive product for revealing an effortless golf swing technique without the hard work. Ive heard some extraordinary things about it and my friend after many years got amazing results with it.

JustJames says:

Interesting, however you forgot C.O.A.M (Conservation of Angular Momentum). You may notice that the clubbed stays closer to the player in the early part of the downswing, which helps them maintain their rotational speed (rather like a figure skater who pulls their arms (mass) closer to spin faster). It is then the change of direction as the hands slow down and the clubhead (which has lagged behind) now has no choice but to catch up. This creates a feeling of effortless power, as you describe.

Johnny Parker says:

More videos like this please. Busting myths with phantom camera at 5000 frames per second.

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