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Pendulum on Earth and another planet different periods radii

  1. May 18, 2016 #1
    • Member advised to type out equations and not to use images only of handwritten scratchwork
    1. The problem statement, all variables and given/known data

    Screenshot_2016-05-18-19-42-16.png
    2. Relevant equations

    3. The attempt at a solution

    20160518_214314.jpg
     
  2. jcsd
  3. May 18, 2016 #2
    The radius seems very small (a factor of 10 less than Earth's radius. But I can't see any mistake in the solution.
     
  4. May 18, 2016 #3

    ehild

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    Your result is wrong. You should use the template and type in your work.
     
  5. May 18, 2016 #4
    I forgot to square the radius in the first calculation.
     
  6. May 18, 2016 #5

    ehild

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  7. May 18, 2016 #6
    Now I get 11200 km.
     
  8. May 18, 2016 #7

    ehild

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    It is all right now, but how did you get it? I see quite a lot of unnecessary calculations on your sheet of paper. It would be very easy if you derived the formula for R2 symbolically.
     
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