Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Physics time problem

  1. Oct 4, 2007 #1
    1. The problem statement, all variables and given/known data

    During an Apollo lunar landing mission, the command module continued to orbit the Moon at an altitude of about 104 km. How long did it take to go around the Moon once?

    2. Relevant equations

    T^2=[4pi^2(r)]/g

    3. The attempt at a solution

    square root of 4pi^2(7.35e25+104000)/9.8=1.7e13min. this answer does not make sense though
     
  2. jcsd
  3. Oct 5, 2007 #2

    Avodyne

    User Avatar
    Science Advisor

    Where does the 7.35e25 come from?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook