不要把沿圆周的切向加速度与向心加速度混淆。

Do not confuse ever the tangential acceleration, which is along the circumference, with centripetal acceleration.

youdao

先前在讲行星时,我们讨论过这个，我们讨论的是,匀速圆周运动，而且我们评估了,向心加速度。

We have discussed that earlier when we dealt with the planets, and we dealt with uniform circular motions, and we evaluated the centripetal acceleration.

youdao

但是别把这个切向加速度，它是沿着圆周的，和向心加速度混淆。

Do not confuse ever the tangential acceleration, which is along the circumference, with a centripetal acceleration.

youdao

When a particle moves in a circle, it has an acceleration towards the center of this size, v^2 over R.

当一个质点在圆周上运动时,它有一个指向圆心的加速度,v^2 / R

耶鲁公开课 - 基础物理课程节选

It tells you when a particle moves in a circle, it has an acceleration in a negative R direction, namely directed towards the center.

它告诉你当一个物体在圆周上运动时,它有一个在 -R 方向的加速度,也就是说是直接指向圆心的

耶鲁公开课 - 基础物理课程节选

Whenever you see a particle moving in a circle, even if it's at a constant speed, it has an acceleration, v square over r directed towards the center.

只要看到质点做圆周运动,即使是匀速圆周运动,也存在一个加速度,大小为 v^2 / r,方向指向圆心

耶鲁公开课 - 基础物理课程节选