Michael Finney
New
the feet
Michael Finney said:the feet
homersson said:G'day Steve,
How do you apply TGM in your teaching? By the book? More Doyle influenced? Manzella influenced?
four barrels said:Those who dont believe in the feet DO NOT UNDERSTAND LAG LOADING!
ej20 said:Centrifugal force may not be a "real" force in the context of Newtons principle of inertia but it has a real "effect".Who cares what this force is called?You can call it centrifugal force,resisting inertial force,jedi force,magic force,reaction force but engineers know that this force is real in effect and thus can be applied in real life applications as though it was a real force.
In any case,the principle of inertia does not hold true in circular motion because circular motion is not an inertial frame of reference,it's a non-inertial frame.
nmgolfer said:BM... I don't do quizes.
I just got in from the bars. Forget standing still. I'm laying still and everything is moving.swingeasttowest said:Stand still and then begin to walk. What moves first???
nmgolfer said:No its not "real" and it does not have a real "effect". Since its not real it cannot be used to explain the flail or anything else in the golf swing. That is where Homer misguides the reader. He uses a fictitious force to explain a complex subject which is wrong and a cop-out. Its like someone telling you Bernoulli's equation explains lift on an airplane wing. It easy to do, its flat out wrong and its done by teachers (who don't know what they are talking about) every day.
Only "real" forces can cause a mass to change direction and or to accelerate. This is Newton's second law. The only time it is ever approprate to use the term "centrifugal force" is when making calculations in rotating "non-inertial" coordinate system. Its a called a "non-inertial" coordinate system because by letting the axes' rotate inertia effects such as centripetal acceleration (which still exists btw) must be explained using a "fictitous" force. We call that fictitious force the centrifugal force. The words "centrifugal force" should never be used in the discussion of the golf swing. Bbeing wrong about basic physics diminishs TGM's repect in the eyes of the golfing community at large... it makes TGM laughable.
You are also wrong when you say the principle of interia does not hold true in circular motion. The only time any of Newton's laws begin to break down is when velocities begin to approach the speed of light.
PS.
BM... I don't do quizes.
ej20 said:You will have to direct me to a suitable authority that says fictitious forces does not have a real effect.
ej20 said:Circular motion can only be analysed in a non-inertial frame of reference.
ej20 said:In theory,the object in question is never in a state of inertia when it is travelling in a circular motion and thus,the law of inertia does not even apply.Only newtons 3rd law applies.Even if it is travelling at a constant velocity,it is constantly changing directions and is considered "accelerating" because velocity needs a direction as well as speed.This accelerating frame of reference is what "causes" this fictitious force.The effect is real just like gravity.
ej20 said:If you really want to discuss fictitious forces then perhaps you need to visit a physics forum,not a golf forum.We are not physicists..we are golfers.Maybe you will get a better debate there.