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KE_{r}
| = |
(m_{i}v_{i}^{2})
| |

= |
(m_{i}r_{i}^{2}) = (m_{i}r_{i}^{2})
| ||

= |
I.
| (12) |

When considering the total mechanical energy of a rigid body, this kinetic energy must be added to the kinetic energy of translation:

KE_{t} = m_{total}v_{cm}^{2}
| (13) |

10/9/1997