角速度

physical quantity defined as the rate of change of angular position whose direction is (if regarded as a vector) the axis of rotation

AI overview

Angular velocity measures how fast something is spinning or rotating around an axis, similar to how regular velocity measures how fast something moves in a straight line. It matters because it helps us understand and predict the behavior of rotating objects, from spinning wheels to orbiting planets.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Has part: axis of rotation
Image: Vector-omega.svg

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Stack Exchange tag: physics.stackexchange.com/tags/angular-velocity
Commons category: Angular velocity
different from: rotational speed
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
maintained by WikiProject: WikiProject Mathematics

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Article · 中文

角速度（Angular velocity）是在物理学中定义为角位移的变化率，描述物体轉動時，在单位时间内转过多少角度以及转动方向的向量，（更准确地说，是贗向量），通常用希腊字母或来表示。在国际单位制中，单位是弧度每秒（rad/s）。在日常生活，通常量度單位時間內的轉動週數，即是每分鐘轉速（rpm），電腦硬盤和汽車引擎轉數就是以rpm來量度，物理學則以rev/min表示每分鐘轉動週數。角速度的方向垂直于转动平面，可通过右手定则来确定，物體以逆時針方向轉動其角速度為正值，物體以順時針方向轉動其角速度為負值。角速度量值的大小稱作角速率，通常也是用ω來表示。

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角速度

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Article · 中文

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