1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Kepler's laws and orbits question?

  1. Jan 26, 2012 #1
    THIS ISN'T THE SAME AS MY PREVIOUS QUESTION ALTHOUGH IT HAS THE SAME TITLE

    1. The problem statement, all variables and given/known data

    The Moon is satellite of earth with a diameter equal to a quarter of Earth's diameter and a mass equal 1/81 of Earth's mass. The period of the moon's rotation about the earth is 27d 7h 43.1 min. The Moon's current orbital distance, about 30x the diameter of the earth, causes it to appear the same size as the sun.
    Determine the force of gravity between the earth and the moon.
    I just need to know if the period of moon's rotation and the diameter of the moon is relevant?
    any help?
     
  2. jcsd
  3. Jan 27, 2012 #2

    vela

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    Maybe, maybe not. What do you think and why?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Kepler's laws and orbits question?
  1. Kepler's law question (Replies: 5)

Loading...