A textbook illustration of the “tuck-and-turn” model of cat rotation. The text accompanying the figure reads “The basic maneuver turns the U-shaped position inside-out, rotating the cat's back from the outside to the inside of the U. The front and rear portions rotate in opposite directions about vertical axes, conserving angular momentum.” (From Hudson and Nelson, University Physics, 2nd ed. Copyright © 1990 Brooks/Cole, a part of Cengage Learning, Inc. Reproduced with permission <www.cengage.com/permissions>.)
A device to demonstrate torque-free rotation, the “electric cat."
Sequence of “electric cat” rotation positions.
Contour plot of the angle ratio as a function of the dimensionless length and mass parameters, according to Eq. (6) .
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