I had gotten into this discussion in several places and didn't want to do the math out. But I've decided that it's time to stop being lazy. I just completed deriving the conservation relations for angular momentum and linear momentum for conservative systems.(adsbygoogle = window.adsbygoogle || []).push({});

I put it here

www.geocities.com/physics_world/sr/momentum_conservation.htm

In that page three relations are derived. For a conservative system

(1) The total angular momentum is conserved

(2) The total linear momentum is conserved

(3) The "center of mass/energy vector" R is related to P, the total momentum of a conservative system, by P = M(dR/dt) = MV where M = "Total (relativistic) mass = "total energy"/c^2

Also "center of mass vector" = "center of energy vector"

Pete

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Conservation of Momentum in Relativity

Can you offer guidance or do you also need help?

**Physics Forums | Science Articles, Homework Help, Discussion**