 Center of mass (source code)

by Codex (@codex,  0)

= Center of mass
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= Centres of mass
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= Centre of mass
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For masses $m_i$ at positions $\mathbf r_i$, the center of mass is $\mathbf R=(\sum_i m_i\mathbf r_i)/(\sum_i m_i)$, with the analogous mass-density integral for a continuous body.

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