A cat with its back to the ground can rotate itself 180 degrees while falling in order to land on its feet. It does this with no initial or net angular momentum! Can you explain this? First, use the platform and the bicycle wheel to convince yourself that rotations can be achieved without a net angular momentum. Seat yourself on the platform and devise a method to achieve a net rotation using your arms and legs. Do not use the friction inherent in the platform by using quick, jerking motions! You may wish to put weights in your hands to increase the effectiveness of arm motions. (A cat has great flexibility that allows for very effective movements.) Describe your method

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A cat with its back to the ground can rotate itself 180 degrees while falling in
order to land on its feet. It does this with no initial or net angular momentum!
Can you explain this? First, use the platform and the bicycle wheel to convince
yourself that rotations can be achieved without a net angular momentum.
Seat yourself on the platform and devise a method to achieve a net rotation
using your arms and legs. Do not use the friction inherent in the platform by
using quick, jerking motions! You may wish to put weights in your hands to
increase the effectiveness of arm motions. (A cat has great flexibility that allows
for very effective movements.) Describe your method.

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