Veritasium

Spinning Disk Trick Solution

ZoggFromBetelgeuse’s solution: http://www.youtube.com/watch?v=pwl-rBVbWAY
This is a preliminary solution to the spinning disk trick based on the commonly cited tippe top explanation. I have my doubts that it tells the whole story because the disk seems to tilt, so the argument about constant angular velocity is in doubt. I wonder if the weight of the disk plays a more important role in making it flip. Plus, I think the disk appears to roll without slipping while the lighter side is moving down. This violates one of the assumptions of the tippe top explanation. So why am I publishing this now? I feel bad it has been two weeks and I haven’t posted the answer yet so let’s consider this a starting point for a work in progress…

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