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cat twist – literally

August 18th, 2012 | biomechanics, sport science, twisting

High Speed video. Cats. Physics. Weightlessness. …

Click PLAY or watch it on YouTube.

GiGi was not hurt during the making of this video. We took great care to make sure she would be safe.

… this involves some serious math. (PDF) …

(via Kottke)

1 comment so far ↓

#1 William A Sands on 08.19.12 at 8:35 am

Nice depiction of the “Cat Twist,” and some beautiful slow motion. This was also demonstrated in slow motion by Dr. Owen Garriott from the, now long crashed, NASA SkyLab. He didn’t do the demo in SkyLab because of the presence of microgravity. I thought I’d also include some of the literature that speaks to a number of methods involved in twisting, both from the supporting surface and while airborne.

1. Frohlich C. Do springboard divers violate angular momentum conservation? American Journal of Physics 47: 583-592, 1979.
2. Yeadon MR. The biomechanics of twisting somersaults part I: Rigid body motions. Journal of sports sciences 11: 187-198, 1993.
3. Yeadon MR. The biomechanics of twisting somersaults part II: Contact twist. Journal of sports sciences 11: 199-208, 1993.
4. Yeadon MR. The biomechanics of twisting somersaults part III: Aerial twist. Journal of sports sciences 11: 209-218, 1993.
5. Yeadon MR. The biomechanics of twisting somersaults part IV: Partitioning performances using the tilt angle. Journal of sports sciences 11: 219-225, 1993.
6. Yeadon MR. Twisting techniques used by competitive divers. Journal of sports sciences 11: 337-342, 1993.
7. Yeadon MR. Twisting techniques used in dismounts from the rings. Journal of applied biomechanics 10: 178-188, 1994.
8. Yeadon MR and Kerwin DG. Contributions of twisting techniques used in backward somersaults with one twist. Journal of applied biomechanics 15: 152-165, 1999.

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