仅为重力加速度的,五分之一。

That is only one-fifth of the gravitational acceleration.

youdao

这也就是重力加速度的2000倍。

And that is 2,000 times the gravitational acceleration.

youdao

大致是重力加速度的40倍。

That is 40 times the acceleration due to gravity.

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

So, a massless body cannot have a net force on it, because the acceleration of the rope cannot be infinite.

所以没有质量的物体不会受到力,因为绳子的加速度不可能是无穷大

耶鲁公开课 - 基础物理课程节选

In fact, it has to be some finite number, which is the acceleration of either of these two guys.

事实上它必须是有限的数值,也就是这两个物体某中某一个的加速度

耶鲁公开课 - 基础物理课程节选