Just let me say (for no real reason) that the average was 1.82 radians/second with a standard deviation of 0.346 radians/second. The starting angular speeds are a little more spread out (as you would expect since they are from different people). Now, just for comparing distributions, what do the starting angular speeds look like? Here is a histogram for that: For spins on the same day this also is likely true. So, is the angular acceleration constant? For a particular spin, this seems to be the case. Maybe they lubricate it from time to time. It is also possible that the friction in the wheel changes with weather conditions. I had one video with four good spins and they were all right around the -0.16 rad/sec 2 range. It is possible that the frame rate is off or some frames are skipped. Honestly, I think the video quality on some of these videos is a little questionable. This gives me an average of -0.1701 rad/s 2 with a standard deviation of 0.0216 rad/s 2.
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