The Golf Swing is a Type of Lever

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The Longer the Lever the Longer the Shot

The golf swing is a type of lever where a weight is on one end of a beam, a fulcrum is on the opposite end of the beam and a force is applied to the center of the beam. All levers possess these elements of a weight, a beam or rigid rod, an applied force and a fixed hinge or fulcrum but how they are arraigned determines their advantage and therefore how they can be used. There are three types of levers:

A form 1 lever has a fulcrum somewhere in the middle of a beam, a force on one side of the fulcrum and a weight on the other side of the fulcrum. This can be a crow bar and depending on where the fulcrum is placed can have a mechanical advantage less than or greater than one. After all it has been said that if one had a lever long enough and somewhere to place the fulcrum it is possible to lift the world.

A form 2 lever has a weight in the middle, the force on one side of the weight and a fulcrum on the other side of the weight. This can be a wheel barrow or a nutcracker and will always have a mechanical advantage greater than 1. Here we see a form 2 lever albeit with added wheels to support the weight.

Form 2 lever
Form 2 lever

A form 3 lever has the force in the middle of a beam, the weight on one side of the force and a fulcrum on the opposite side of the force. Here is a batter in baseball or a golf swing. Now because of the long distance between the weight from the fulcrum, the weight is  accelerated from the force applied to the center. This arraignment is used to create speed and the  greater the length of the beam the more velocity is created from the force applied to the center.

With the golf swing the resistance or weight is the clubhead, the fulcrum is the left shoulder and the force is from the body applied to the center of the beam measured as the length of the left arm and clubshaft. By swinging the left arm across the chest into connection, in the backswing, the rotational and vertical forces of the body can be applied to the center, in the through swing, resulting in both clubhead acceleration and forward movement of the shaft as shown by Sam Snead.

 

Sam Snead at impact
Sam Snead at impact

 

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Warren Raatz
PGA Golf Instructor
Royce Brook Golf Club
201 Hamilton Road
Hillsborough, NJ 08844

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