In rotation, force becomes torque, mass becomes moment of inertia, and acceleration becomes angular acceleration.

在旋转时，力变成力矩，质量变成转动惯量，加速度变成角加速度。

youdao

That is the analog of force divided by mass equals acceleration, which is d over dt of velocity.

这个类似于，力除以质量等于加速度，就是速度对t的导数。

youdao

Well, the earth is going to fall towards the apple — So the force on the earth is the mass of the earth times the acceleration of the earth.

地球也会坠向苹果-，因此地球上的力与地球的质量相等，再乘以地球的加速度。

youdao

Now, gravity, well force, is equal to mass times acceleration, g and the acceleration due to gravity is g.

是重力，等于质量乘以加速度，由重力导致的加速度是。

麻省理工公开课 - 热力学与动力学课程节选

You cannot say to me, "Take a force, due to a spring, and see what force it applies and divide by the acceleration and get the mass, " because we haven't defined force, either.

你不能说,"给弹簧施加一个力,看看它能提供多大的力,然后除以加速度,得到质量",因为我们还没给力下一个定义

耶鲁公开课 - 基础物理课程节选

First one says, if you knew the force acting on any body, without going into what caused the force, then you may set that force equal the mass times acceleration of the body.

第一部分是,如果你知道作用在任一物体上的力,无论这个力的来源是什么,都可以令力等于质量乘以物体的加速度

耶鲁公开课 - 基础物理课程节选