reverse gears | How is angular momentum conserved with gears that reverse the direction of rotation? | |

perpendicular gears | How is angular momentum conserved with gears that change the direction of rotation through 90 degrees? | |

rotating platform | What is the angular momentum when we have one rotating object on top of another? | |

rotating flywheel | What is the angular momentum in this situation? |

## Further Information

These pages contain examples to illustrate the principles involved, for an discussion of the theory about angular momentum see this page.