我想問既係,乜個個Force唔係淨力+mg(siny)+f咩?個淨力就一定係mg(siny)+f咩?
收錄日期: 2021-04-24 08:35:38 原文連結 [永久失效]: https://hk.answers.yahoo.com/question/index?qid=20070606000051KK05128
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