Catch the Mistake! Conservation of Angular Momentum

As many of you pointed out, we make a mistake in this video. It's inexcusable that we did, but we finally made corrections in a new version (   • MIT Physics: Spinning Bike Wheel and ...  ) BUT! See if you can catch the error in this original version.
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made with love at MIT
Creative Commons: CC BY-NC-SA
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Written and produced by: Elizabeth Choe
Directed by: George Zaidan
Editing and animations by: Per Hoel
Camera: Adam Morrell
Hosted by: Ryan Robinson