radius of point的意思|示意

5 times the radius, conservation of mechanical energy tells you that that is the minimum it takes to just go through that point.

5倍于半径的高度，机械能守恒定理，告诉我们照着书，要经过这点的最小值。

And the second point is of radius 3 and angle 1, which is up about there.

半径为2然后角度为1的一个点,也就是差不多在这儿，我认为为了确保我做的是。

self y Notice what I also do here, I create self dot y, give it a value, and then, oh cool, I can also set up what's the radius and angle for this point, by just doing a little bit of work.

我创建了，然后给它赋值，然后，噢太酷了，通过做一点额外的工作,就可以得到点的半径和角度了，好，实际上如果。