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Post by virtuoso on Jul 17, 2012 13:16:49 GMT -5
If, right before impact, suddenly the golfer had zero friction under his feet, what would happen?
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Post by imperfectgolfer on Jul 17, 2012 13:20:08 GMT -5
I imagine that there would be very little difference in terms of impact conditions and power generation.
Jeff.
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Post by virtuoso on Jul 17, 2012 15:17:16 GMT -5
not to the ball. What would happen to the golfer?
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Post by burner on Jul 17, 2012 17:34:33 GMT -5
Assuming you mean zero grip, rather than friction, he would fall over.
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Post by imperfectgolfer on Jul 17, 2012 18:14:03 GMT -5
The golfer would fall-over.
The direction of falling would depend on swing style. The more rotary his downswing torso motion (eg. Hogan), the more he would fall left of the ball-target line. By contrast, a "goat humping" golfer and S&T golfer would fall more in the direction of the target. A TGM hitter could fall to the right of the ball-target line.
Jeff.
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Post by virtuoso on Jul 17, 2012 19:03:39 GMT -5
Wow, do you really think that those swing styles are so fundamentally different in the type of foot sheer forces and torque forces that the golfers would fall different directions?
I have a hard time thinking they are that different. My thinking is that the golfer would suddenly go into the sissor splits because he is essentially trying to turn the earth a certain direction but then suddenly lose grip of it.
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Post by imperfectgolfer on Jul 17, 2012 19:49:55 GMT -5
I have no idea what you mean by stating that the "golfer is trying to turn the earth".
I think that what happens at foot level depends on the pivot motion forces in play - and I think that a golfer primarily moves his pelvis and mid-upper torso in his pivot motion, and that there is a great variety of different pivot motions. Bubba Watson has a large amount of rotary pelvic motion at the start of his downswing and I am therefore not surprised that his left foot rotates counterclockwise through impact. By contrast, other golfers have more of a left-lateral swaying motion of their pelvis eg. S&T golfers. In the 1970s, golfers adopted a knee-bending motion directed towards the target (ala Nicklaus) at the start of the downswing, and they would often roll over the outer border of their left foot through impact.
Jeff.
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Post by virtuoso on Jul 18, 2012 10:18:24 GMT -5
By turn the earth, I mean the pelvis is using the friction under the feet to try to turn the ground. Since it can't turn the ground, it turns itself the opposite direction.
How about them apples?
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Post by imperfectgolfer on Jul 18, 2012 14:16:48 GMT -5
I don't think that the feet are trying to turn the ground.
I think that a golfer primarily turns the pelvis (left hip clearing action) and that pelvic motion secondarily torques the legs and that (in turn) produces a torquing of the feet against the ground, which the friction-against-the-ground-under-the-feet resists, thereby stabilizing the feet on the ground. The absence of friction between the feet-and-the-ground would not allow the feet to be stable on the ground, and the golfer would then not be able to remain braced and balanced during his downswing action.
What apples?
Jeff.
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Post by virtuoso on Jul 18, 2012 15:02:34 GMT -5
Ok, I'll buy those apples (those apples being your explanation).
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