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## Angular momentum

## Babylon English English dictionary | Download this dictionary |

angular momentum

quantity that is the measure of the intensity of rotational motion (Physics)

## Wikipedia English The Free Encyclopedia | Download this dictionary |

Angular momentum

In physics,

**angular momentum**(less often**moment of momentum**or**rotational momentum**) is a physical quantity is a measure of the amount of rotational motion of an object, taking into account how fast a distribution of mass rotates about some axis. It is the rotational analog of linear momentum. For example, a conker twirling around on a short chord has a lower angular momentum compared to twirling a heavy sledgehammer at high speed. Increasing the length of chord, using a heavier conker, and angular speed of twirling, all increase the angular momentum of the conker. In principle, the conker and sledgehammer could have the same angular momentum, despite the differences in their masses and sizes.See more at Wikipedia.org... |

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## WordNet 2.0 Dictionary | Download this dictionary |

angular momentum

**Noun**

1. the product of the momentum of a rotating body and its distance from the axis of rotation; "any rotating body has an angular momentum about its center of mass"; "angular momentum makes the world go round"

(hypernym) momentum

## ASTRONOMY UNBOUND Dictionary | Download this dictionary |

Angular momentum

A quantity obtained by multiplying the mass of an orbiting body by its velocity and the radius of its orbit. According to the conservation laws of physics, the angular momentum of any orbiting body must remain constant at all points in the orbit, i.e. it cannot be created or destroyed. If the orbit is elliptical the radius will vary. Since the mass is constant the velocity changes. Thus planets in elliptical orbits travel faster at periastron and more slowly at apastron. See also orbital angular momentum, spin and Kepler's Laws of Motion. A spinning body also possesses spin angular momentum.

## Dizionario inglese-italiano 1.0.012 | Download this dictionary |

ANGULAR MOMENTUM

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