V2EX rotational motion

Rotational Motion

定义 Definition

旋转运动:物体绕某一固定点或固定轴转动的运动形式。常见特征包括角位移、角速度、角加速度;与之对应的线性量有切向速度与向心加速度。

发音 Pronunciation (IPA)

/rotenl mon/

例句 Examples

The wheel shows rotational motion as it turns. 车轮在转动时表现出旋转运动。

In rotational motion, points farther from the axis usually move faster in a linear sense, even if the angular speed is the same. 在旋转运动中,离转轴更远的点在“线速度”意义上通常更快,即使角速度相同。

词源 Etymology

rotational 来自 rotation(旋转),源于拉丁语 rotare(“转动”);motion 源于拉丁语 motio(“运动、移动”)。合在一起表示“与旋转有关的运动”。在物理学中它与 linear motion(直线运动)相对。

相关词 Related Words

文学作品 Literary Works

  • A Brief History of Time(Stephen Hawking)讨论宇宙与天体的自转、公转等现象时常涉及旋转运动的概念。
  • The Feynman Lectures on Physics(Richard P. Feynman)在讲解刚体与角动量等内容时多次使用与“rotational motion”对应的表达。
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