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!

Force of gravity from different heights

  1. Apr 9, 2010 #1
    How do I find the difference in gravity pull on a object dropped from 1km, 10km and 100km based on the objects mass (such as earth vs the moon)

    e: Don't care about drag
  2. jcsd
  3. Apr 9, 2010 #2
    You can use the equation:

    F = (-G x m1 x m2) / r^2

    F is Force
    G is Gravitational constant (6.7x10^-11) (Make it negative to show attraction)
    m1 is the mass in kg of an object
    m2 is the mass in kg of another object
    r is the radius or the distance in meters between the objects.

    Hope this helps!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook