This video is a footnote for the video about the ring around the earth: https://www.youtube.com/watch?v=4xSPlQUejd8
Essentially, a ring around the earth is in unstable equilibrium, so it would stay put, but then fall one way or the other as soon as any asymmetry (even thermal or quantum fluctuations) developed.
MinutePhysics is on Google+ - http://bit.ly/qzEwc6
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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
Tagged under: physics,minutephysics,science
Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
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