Was Homer Wrong?

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Old 06-27-2006, 11:02 AM
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annikan skywalker annikan skywalker is offline
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The String in TGM is the Longitudinal Center of Gravity or termed herein the Sweetspot Plane..I have a Training Aid with a String from the #3PP to directly to the CG of the head.....While Centrepetal force pulls it in a circle...Centrifugal force changes the length of this string...
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Old 06-27-2006, 11:56 AM
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What is the Longitudinal Center of Gravity?
Originally Posted by annikan skywalker

The String in TGM is the Longitudinal Center of Gravity or termed herein the Sweetspot Plane.
The Golf Club's Longitudinal Center of Gravity is its Sweetspot (2-F). In other words, it is the Club's center of gravity when the Club is held lengthwise. It is neither the 'string' (the Left Arm and Clubshaft to which the Sweetspot is attached) nor the plane of motion (upon which the Sweetspot orbits).
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Old 06-27-2006, 12:17 PM
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annikan skywalker annikan skywalker is offline
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Originally Posted by Yoda
The Golf Club's Longitudinal Center of Gravity is the Sweetspot (2-F). In other words, it is the Club's center of gravity when the Club is held lengthwise. It is neither the 'string' (the Left Arm and Clubshaft to which the Sweetspot is attached) nor the plane of motion (upon which the Sweeptspot orbits).

Thanks for the clarification...
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Old 06-27-2006, 12:30 PM
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More definition,
The centripetal force-the action-is balanced by a reaction force, the centrifugal ("center-fleeing") force, which acts not on the circling object but on the source of centripetal force, usually located at the circle's center. The two forces are equal in magnitude and opposite in direction.

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Old 06-27-2006, 10:54 PM
golf_sceptic golf_sceptic is offline
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Spot on annekin!

"While Centrepetal force pulls it in a circle...Centrifugal force changes the length of this string..."

Centripetal force acts on the rock. Centrifugal force acts on the string. For other contributors, remember that these words aren't magic. Centrifugal=away from the centre. Centripetal=toward the centre.
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Old 06-28-2006, 06:40 AM
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Originally Posted by golf_sceptic
Spot on annekin!

"While Centrepetal force pulls it in a circle...Centrifugal force changes the length of this string..."

Centripetal force acts on the rock. Centrifugal force acts on the string. For other contributors, remember that these words aren't magic. Centrifugal=away from the centre. Centripetal=toward the centre.
I can't argue beyond this explanation. In the case of the TGM model the string length (radius) is from shoulder the clubhead and it lengthens dramatically from start down to impact. Like a flail with the wrist as the thong.

Is this close to correct? No physics degree over here,,

CW
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Old 06-28-2006, 07:28 AM
golf_sceptic golf_sceptic is offline
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Quote:
Is this close to correct?
Yes. The flail model is an essential element of any model of the golf swing. I hope to move on to discussion of the flail and the throw out effect fairly shortly. The only unresolved issue I see with the stone and the rock is the "frame of reference" problem yoda raised. After that it's full steam ahead.
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