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# Centripetal Physics

### Centripetal force + gravitational law

Term | Definition |
---|---|

changing acceleration bc... | changing direction |

centripetal force is... | the Fnet between Fn and Fg |

centripetal force points towards... | the center |

central pointing acceleration caused by... | central pointing Fnet |

magnitude of acceleration in CONSTANT but... | DIRECTION is changing |

Fc= | m x ac |

Direction of velocity is changing constantly as... | it moves around the circle |

velocity is always... | PERPENDICULAR to arc (TANGENTIAL to curve) |

ac= | V^2 (tan) / r |

TANGENTIAL velocity V= | displacement / time |

CIRCLE V= | 2 pi r (circumference) / T (period) |

Universal Gravitation Law | ALL mass is attracted to all other mass The strength of the gravitational force is DIRECTLY proportional to both MASSES and INVERSELY proportional to the DISTANCE between their centers |

Newton's 3rd Law | For every action, there is an equal and opposite reaction force |

Newton's 2nd Law | a= Fnet / mass a is DIRECTLY proportional to Fnet and INVERSELY proportional to mass Fnet is DIRECTLY proportional to mass |

Newton's 1st Law | An object w constant position or constant velocity will remain the same unless acted upon by a net external force |

Equation of FG | | FG |= G m1 x m2 / r^2 |

G= | 6.67 x 10^-11 Nm^2 / kg^2 (universal gravitation constant) |

Created by:
daisy98