所以我们现在要做的，是算出这个系统里的转动惯量，然后就可以预测出，这个摆的周期是多少-，这并不是我的目的。

And so all we have to do now is to calculate the moment of inertia of the system, and then we can predict what the period — of this pendulum is going to be — which is not my goal.

youdao

如果转动过度，当然，会永远毁坏的，那么周期和,θ最大值相关。

So if we twist it too much up, then, of course, we will permanently deform it, and then the period will not be independent of theta maximum.

youdao

太阳的旋转周期是，26天，地球是一天，最后把一切转化成，米千克秒的单位，得到旋转动能的数据。

Well, the sun rotates about its axis in 26 days, the earth in one day, and so I finally convert everything to MKS units and I find these Numbers for the rotational kinetic energy.

youdao