- #1
UrbanXrisis
- 1,196
- 1
it is said that the posiion vector of the cener of mass of a rigid body can be obtained by:
[tex]r_{CM}= \frac{1}{M} \int r dm[/tex]
I'm not sure I understand this expression. What exactly is dm? and I thought it was the sumation of mass times distance divided by the total mass...
[tex] \frac{m_1x_1+m_2x_2+...}{m_1+m_2+...}[/tex]
that is the integral of r wrt dm?
[tex]r_{CM}= \frac{1}{M} \int r dm[/tex]
I'm not sure I understand this expression. What exactly is dm? and I thought it was the sumation of mass times distance divided by the total mass...
[tex] \frac{m_1x_1+m_2x_2+...}{m_1+m_2+...}[/tex]
that is the integral of r wrt dm?