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Homework Help: An astronaut has landed on Planet N-40 and conducts an experiment to

  1. Jun 21, 2014 #1
    1. The problem statement, all variables and given/known data

    An astronaut has landed on Planet N-40 and conducts an experiment to determine the acceleration due to gravity on that planet. She uses a simple pendulum that is 0.640 m long and measures that 10 complete oscillations 26.0 s. What is the acceleration of gravity on Planet N-40?

    2. Relevant equations

    I am not sure what to use.

    3. The attempt at a solution

    I tried using T=2pi square root L/g and solve for g and plugged everything in. Period T I did 26/10 so 1 period every 2.6 seconds I got g=.595 and is non of the choices.

    It is this formula above. I solved for g wrong. Now I got the correct answer thank you everyone.
    Last edited: Jun 21, 2014
  2. jcsd
  3. Jun 21, 2014 #2
    There's a formula that you can use. Find the period and you should be able to solve for g.

    What formula did you get when you solved for g? I got a different answer.
    Last edited: Jun 21, 2014
  4. Jun 21, 2014 #3
    When I caught my error I redid it and got g=(4pi^2 *L)/(T)^2
  5. Jun 21, 2014 #4
    That should give you the correct answer.
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