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!

What is meant by moment of particles?

  1. Jul 21, 2014 #1
    What is meant by moment of particles ? Why the algebraic sum of moments of all particles about centre of mass must be zero ?
     
  2. jcsd
  3. Jul 21, 2014 #2

    Matterwave

    User Avatar
    Science Advisor
    Gold Member

    Can you give the context in which this term "moment" is used? And in what context is this "moment" zero about the center of mass? The "moment" of particles is not a standard physics term.
     
  4. Jul 21, 2014 #3

    UltrafastPED

    User Avatar
    Science Advisor
    Gold Member

    Moment refers to moment arm ... the lever arm times the mass.

    See https://en.wikipedia.org/wiki/Moment_(physics [Broken])

    If the sum of the forces is zero, and the sum of the moments is zero, then there will be no net force on the system.
     
    Last edited by a moderator: May 6, 2017
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook