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A comment on Physicists Still Don’t Know What Puts the Curl in Curling. Parent comment

Re:Physicists Still Don’t Know What Puts the Curl in Curling by Scarblac on Thursday March 15, 2018 @10:59AM (#16593393)
This doesn't explain why you get the same amount of curl if the stone rotates twice during its run or twenty times.
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Re:Physicists Still Don’t Know What Puts the Curl in Curling by psheets on Thursday March 15, 2018 @11:18AM (#16593566)
The delta of the ice on stone speed between the sides is not dependent on the rotational speed but liner speed in relation to the rotational speed.
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Re:Physicists Still Don’t Know What Puts the Curl in Curling by hexane360 on Thursday March 15, 2018 @04:42PM (#16596374)
You're wrong, and even if you were right that wouldn't argue against GP's observation.

V_cm: velocity of center of mass

V_l: velocity at left edge

V_r: velocity at right edge

R: radius of stone

w: angular speed of stone (CCW is +)

  V_l = V_cm + R*w
  V_r = V_cm - R*w
  delta = 2*R*w
Even if it was dependent on linear speed / rotational speed, the only way to change # of turns / run is to change linear speed / rotational speed.
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