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

Work energy principle vs newtons law

  1. Mar 16, 2010 #1
    Why do we choose to use the work energy principle instead of the Newtons law to analyze the motion of a system of rigid bodies?
     
  2. jcsd
  3. Mar 16, 2010 #2

    minger

    User Avatar
    Science Advisor

    Both principles work in every case. That is, there is always conservation of momentum and energy. Sometimes, it makes more sense (read, easier) to solve a particular problem in a certain way.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Work energy principle vs newtons law
Loading...