- when I have systems with 3 mass points ($m_i, i=1,2,3$) to a time $t=t_0$ on positions $\vec r_i(t_0)$ and velocity $\vec v_i(t_0)$. How could a syntax look like to calculate
1) center of mass 2) total momentum 3) total angular momentum
for any number of mass points?
- Secondly, later when time is $t_1 > t_0$ the positions and velocities of 2 of this 3 mass poins are known. How could mathematica calculate position and velocity of third mass point, when there is no external force ?
Thank you very much!