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!

Roche Limit Formula Question

  1. Feb 6, 2012 #1
    Relevant equations


    I can't seem to find a good explanation of what Δr is. My textbook uses an example of two particles, with that being the distance between their centers, but on the planetary scale, does Δr represent the orbiting body's radius or diameter?
  2. jcsd
  3. Feb 6, 2012 #2


    User Avatar

    Staff: Mentor

    Δr is the radius of the primary. Wikipedia has a derivation.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Roche Limit Formula Question
  1. Limit question (Replies: 6)

  2. Limit question (Replies: 4)

  3. Formula question (Replies: 1)

  4. A Limits Question (Replies: 3)

  5. Limits Question (Replies: 1)