题目内容
(请给出正确答案)
[主观题]
A small sphere moves from point [图] to point [图]...
A small sphere moves from pointto pointalong a circular path in a vertical plane. If it moves along path, the work done by its gravity force is. If it moves along path, the work done by its gravity force is. Then we can get
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提问人:网友lee19800
发布时间:2022-01-07