The Physics of Dance - University of Illinois High Energy Physics ...

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" Increasing I Decreases Spin Rate r r × 2 4 rpm 1 rpm quadruples in the figure. v ! I " Before... ...and after Because of “conservation of angular momentum” you can change the speed of a turn when en pointe by extending or retracting arms and legs. No torque is involved! 24
" Increasing I Decreases Spin Rate v ! v ! larger I, smaller ω smaller I, larger ω 25
Page 1 and 2: The Physics of Dance George Gollin,
Page 3 and 4: How’d we get ourselves into this?
Page 5 and 6: Force changes momentum • The hard
Page 7 and 8: More Physics Vocabulary • Angular
Page 9 and 10: Still More Physics Vocabulary • C
Page 11 and 12: About torque... Torque changes angu
Page 13 and 14: Center of gravity Just like you'd t
Page 15 and 16: More complicated example v ! v ! Fo
Page 17 and 18: Staying Balanced Smaller floor cont
Page 19 and 20: Balance While Turning Not all posit
Page 21 and 22: Reminders: The Physics of Turns !
Page 23: Calculating Rotational Inertia I "
Page 27 and 28: The Physics of Jumps Gravitational
Page 29 and 30: The Physics of Jumps The equivalenc
Page 31 and 32: Gravitational acceleration... …is
Page 33 and 34: Trajectory in a Jump Height vs. tim
Page 35 and 36: Illusions in a Jump By raising his/
Page 37 and 38: Half the duration of the jump is sp
Page 39 and 40: With More Time... Time permitting,

The Physics of Dance - University of Illinois High Energy Physics ...

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