# Centripetal Force

## Key Formulas

F_{c} | centripetal force | N | |

m | mass | kg | |

v | tangential velocity | m/s | |

r | radius | m |

F_{c} | centripetal force | N | |

m | mass | kg | |

ω | angular velocity | rad/s | |

r | radius | m |

## Tips to Remember

- Confused about whether you have tangential or angular velocity? The biggest tipoff is the unit. Tangential velocities (v) use traditional length divided by time units (m/s, km/hr, mph, etc.). An angular velocity’s units involve angles or revolutions, such as 10 rad/s, or 20 rpm (revolutions per minute).
- If you need to convert revolutions to radians in your angular velocity, use the fact that there are 2π radians in 1 revolution.

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