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

Point Mass and Extended Objects

  1. Oct 21, 2007 #1
    I'm afraid that I do not quite understand the difference between a point mass object and an extended object. The only definition that I have is that an extended object has a definite, finite size and shape. That doesn't tell me very much...

    If someone could please tell me the difference between these two objects, I would greatly appreciate it. ^_^
     
  2. jcsd
  3. Oct 21, 2007 #2

    robphy

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    The configuration of
    a point particle is described by its position in space...
    a rigid extended object is described by the position of its center of mass and its orientation.

    Think "degrees of freedom".
     
    Last edited: Oct 21, 2007
  4. Oct 21, 2007 #3
    ah, I get it now. Thank you.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Point Mass and Extended Objects
Loading...