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What is this equation for?

  1. Nov 25, 2012 #1
    I just seen it on a random video, it just randomly flashed whilst at the end. I'm curious to know what it's for and the variables?

    It may have something to do with gravity (maybe, don't take my word for it).
  2. jcsd
  3. Nov 25, 2012 #2
    It's Newton's atraction law
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