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!

Net Gravitational Force

  1. Sep 8, 2006 #1

    I attached a diagram... to find out the arrangement of the magnitude of the net gravitational force on the particle labeled m from the smallest to the biggest.

    my answer is A B D C, anyone had a different way of looking at it?
    could you explain? some of my friends said it was A D B C... =|

    Thanks in advance

    Attached Files:

  2. jcsd
  3. Sep 8, 2006 #2


    User Avatar
    Staff Emeritus
    Science Advisor

    In B, there is one mass at distance d, the other at distance D.
    In D, there is one mass at distance d, the other at distance [itex]\sqrt{d^2+ D^2}[/itex].

    The force from the mass at distance D will be greater than the force from the mass a distance [itex]\sqrt{d^2+ D^2}[/itex] so the net force in B is greater than in D.
  4. Sep 8, 2006 #3
    i give D a value of 50 and d a value of 1 and my result is square root of (d^2 + D^2) is more than D. My maths isn't very good. Could you help to explain?

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

Similar Discussions: Net Gravitational Force
  1. Net gravitational force (Replies: 10)