V2EX centrifugal force

Centrifugal Force

释义 Definition

离心力:在旋转参考系中为解释物体“向外甩”的趋势而引入的惯性力/假想力(伪力),方向指向远离旋转中心。注意:在惯性参考系中,离心力不是一种“真实施加的力”,物体需要的是指向中心的向心力来维持圆周运动。

例句 Examples

The centrifigual force makes the water press against the sides of the spinning bucket.
离心力使水被“压”到旋转水桶的桶壁上。

In a rotating frame, engineers include centrifugal force in calculations to predict how objects behave on a spinning platform.
在旋转参考系中,工程师会在计算中加入离心力,以预测物体在旋转平台上的运动表现。

发音 Pronunciation (IPA)

/sntrfjul frs/(美式常见)
/sntrfjul fs/(英式常见)

词源 Etymology

centrifugal 来自拉丁语构词:centrum(中心)+ fugere(逃离、飞奔),字面意思是“从中心逃离的”。因此 centrifugal force 直译就是“向外逃离中心的力”,用来描述旋转系统中“向外”的表观效应。

相关词 Related Words

文学与名著中的用例 Literary Works

  • The Feynman Lectures on Physics(费曼《物理学讲义》)在讨论非惯性系与“伪力”时常涉及离心力概念。
  • Classical Mechanics(Herbert Goldstein《经典力学》)系统讲解旋转参考系中的离心力与科里奥利力。
  • Cosmos(Carl Sagan《宇宙》)在通俗讲解旋转与天体运动时会提及离心效应与相关直觉。
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