Post by dubiousgolfer on Oct 11, 2019 19:01:09 GMT -5
Hi UG
"If CF is fictitious, then what is the correct way to explain it? Is the first step simply to call it centripetal force or CP?"
CP force is directed to the centre of the arc radius so cannot increase the object (being swung in an arc) linear speed.
""swing the whole system in a plane around the upper lever's pivot, things happen as follows: to begin with the lower lever follows the swing of the upper lever and stays at a constant angle to it. Very soon, though, centrifugal force begins to throw the lower lever outwards, so that it begins to catch up with the upper lever."
Imho, the below might be a more accurate description although more difficult to understand if you are not acquainted with physics.
The increased tension force being applied on the first lever by the pivot will cause a 'moment of force' on the COM of the 2nd lever . This will cause the COM of the 2nd lever to align itself with the tail end of that 'tension force'.
"This has led many top teachers to develop the following INCORRECT theories:
The Inside Moves the Outside;
The big muscles of the leg, torso, and shoulders produce the power;
Hip speed can produce shoulder speed, which can produce arm speed, which can produce clubhead speed;
Both the direction and speed of the clubhead are controlled by your torso;
The dog wags the tail;"
Another golf theorist stated the above (ie. that other golf theories were incorrect). He assumed they developed their theories because they were using 'Centrifugal force' inaccurately. How he came to that conclusion is a mystery to me but I don't think anyone can confirm any of those theories are 100% accurate? How can one determine that a particular movement of one segment of a body transfers some/all of its energy to another distal segment?
Michael Hebron's statement is just plain wrong from a physics perspective so I cannot understand how it can be restated correctly? It makes no sense to me at all.
Imho , I think these 2 videos provide a better idea on what 'general' forces are happening in the golf swing (but you may need to review your old physics lessons).
vimeo.com/158419250
vimeo.com/158856998
DG
"If CF is fictitious, then what is the correct way to explain it? Is the first step simply to call it centripetal force or CP?"
CP force is directed to the centre of the arc radius so cannot increase the object (being swung in an arc) linear speed.
""swing the whole system in a plane around the upper lever's pivot, things happen as follows: to begin with the lower lever follows the swing of the upper lever and stays at a constant angle to it. Very soon, though, centrifugal force begins to throw the lower lever outwards, so that it begins to catch up with the upper lever."
Imho, the below might be a more accurate description although more difficult to understand if you are not acquainted with physics.
The increased tension force being applied on the first lever by the pivot will cause a 'moment of force' on the COM of the 2nd lever . This will cause the COM of the 2nd lever to align itself with the tail end of that 'tension force'.
"This has led many top teachers to develop the following INCORRECT theories:
The Inside Moves the Outside;
The big muscles of the leg, torso, and shoulders produce the power;
Hip speed can produce shoulder speed, which can produce arm speed, which can produce clubhead speed;
Both the direction and speed of the clubhead are controlled by your torso;
The dog wags the tail;"
Another golf theorist stated the above (ie. that other golf theories were incorrect). He assumed they developed their theories because they were using 'Centrifugal force' inaccurately. How he came to that conclusion is a mystery to me but I don't think anyone can confirm any of those theories are 100% accurate? How can one determine that a particular movement of one segment of a body transfers some/all of its energy to another distal segment?
Michael Hebron's statement is just plain wrong from a physics perspective so I cannot understand how it can be restated correctly? It makes no sense to me at all.
Imho , I think these 2 videos provide a better idea on what 'general' forces are happening in the golf swing (but you may need to review your old physics lessons).
vimeo.com/158419250
vimeo.com/158856998
DG