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Homework Help: Very simple Question for non-student.

  1. Dec 10, 2007 #1
    I'm trying to help a friend out, would anyone be willing to be an extraordinary help and simply plug in the numbers for this formula and let me know the answer? It would be greatly appreciated.

    2. Relevant equations


    m = 7.35 x 10^22kg
    r = 3.84 x 10^8
    T = 2358720s

    Thank you!
  2. jcsd
  3. Dec 10, 2007 #2
    2.0027443773 x 10^20 (kg*m/s/s)

    Might be a little off, I haven't calculated such big numbers in my head in a long time.
    Hope that helps!
  4. Dec 10, 2007 #3


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    How did you know it was meters???? Amazing. It's the force exerted by the earth on the moon, isn't it?
  5. Dec 10, 2007 #4
    Thanks so much guys, that's it! Mucho appreciated!
  6. Dec 10, 2007 #5
    Haha, yeah you're right. I was hoping the 11 or so significant digits would be the funny part but the joke ended up being on me. And yeah, that's the distance to the moon from the earth.
  7. Dec 10, 2007 #6


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    Not at all, you were pretty funny as well. Goosey23, you just wanted a confirmation, right? You do know how to calculate that?
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