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The Schenectady JCC, where SteelyKid and The Pip go to day care, has a playground with a merry-go-round on it. How this hasn't been sued out of existence, I have no idea, but it's a great boon to a physics professor. I've used it before to talk about angular momentum, but this weekend I enlisted SteelyKid's help to make a video illustrating a different sort of physics with the merry-go-round, a camera, and a tennis ball:
To revist this article, visit My Profile, then View saved stories. While waiting for Reddit to load on my phone, I wondered if I could do some physics with the loading icon. Maybe you've seen it. It looks like a mini solar system with four planets (two inner planets and two outer planets). Let's model it! Video: Rhett Allain via Reddit We should start with some data. I can do a screen capture of the loading screen and then use my favorite video analysis program (Tracker Video Analysis) to get position and time data. Of course, the screen shows distance in units of pixels and that's not very ...