V2EX radial force

Radial Force

释义 Definition

径向力:沿着圆或旋转系统的半径方向(指向圆心或远离圆心)作用的力。在圆周运动、轴承受力、转子动力学等场景中,力常被分解为径向(radial)切向(tangential)分量;其中径向分量常与向心力(centripetal force)相关。

发音 Pronunciation (IPA)

/redil frs/

例句 Examples

The wheel feels a strong radial force when it spins fast.
车轮高速旋转时会感到很强的径向力。

In uniform circular motion, the net radial force points toward the center and equals \(mv^2/r\), keeping the object on its circular path.
在匀速圆周运动中,合径向力指向圆心,大小等于 \(mv^2/r\),从而使物体保持在圆轨道上运动。

词源 Etymology

radial 来自拉丁语 radius(“半径、辐条”),表示“与半径有关的、沿半径方向的”。force 来自古法语 force(“力量、强制”)。合起来 radial force 字面意思就是“沿半径方向的力”。

相关词 Related Words

文学与著作 Literary Works

  • Classical Mechanics(Herbert Goldstein):在圆周运动与受力分解讨论中涉及径向方向的力。
  • University Physics with Modern Physics(Young & Freedman):在向心加速度/向心力章节中常以径向力表述。
  • Fundamentals of Physics(Halliday, Resnick & Walker):圆周运动部分以径向分量说明合力与轨迹关系。
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