So here comes the work that Walter Lewin has to do when we go from infinity to that point, which is capital R, radius, from this object.

所以，这就是,我要做的功,从无穷远处移到这点，也就是距离这个物体，距离为R处。

youdao

So here comes the work that Walter Lewin has to do when we go from infinity to that point, which is capital R, radius, from this object.

所以，这就是,我要做的功,从无穷远处移到这点，也就是距离这个物体，距离为R处。

youdao