1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

When is Translational Momentum Conserved

  1. May 9, 2009 #1
    1. The problem statement, all variables and given/known data

    When is Translational Momentum Conserved and when is Angular Momentum Conserved?
  2. jcsd
  3. May 9, 2009 #2
    Re: Momentum

    When no net external force acts on the system...or a net change in the content of the system (essentially an isolated system...or closed system...I forgot the difference between the two if there is any). Think of it in terms of p = mv...changes in p may occur from changes in m (mass) or v (velocity). The same applies to angular momentum.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook