That's exactly right, y0 because then the distance R between here and the y zero is R, so this is the potential energy as a function of angle theta.
它非常正确，因为这样，这里和,的距离是，因此这是势能,关于θ的变化。
That's exactly right, y0 because then the distance R between here and the y zero is R, so this is the potential energy as a function of angle theta.
它非常正确，因为这样，这里和,的距离是，因此这是势能,关于θ的变化。
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