有点过程想不通 ..这里面有解题的过程他说F合=mg/sinθ但是我是这样写的,cosθF+sinθG=F合 一直都想不通
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![有点过程想不通 ..这里面有解题的过程他说F合=mg/sinθ但是我是这样写的,cosθF+sinθG=F合 一直都想不通](/uploads/image/z/10878040-64-0.jpg?t=%E6%9C%89%E7%82%B9%E8%BF%87%E7%A8%8B%E6%83%B3%E4%B8%8D%E9%80%9A+..%E8%BF%99%E9%87%8C%E9%9D%A2%E6%9C%89%E8%A7%A3%E9%A2%98%E7%9A%84%E8%BF%87%E7%A8%8B%E4%BB%96%E8%AF%B4F%E5%90%88%3Dmg%2Fsin%CE%B8%E4%BD%86%E6%98%AF%E6%88%91%E6%98%AF%E8%BF%99%E6%A0%B7%E5%86%99%E7%9A%84%2Ccos%CE%B8F%2Bsin%CE%B8G%3DF%E5%90%88+%E4%B8%80%E7%9B%B4%E9%83%BD%E6%83%B3%E4%B8%8D%E9%80%9A)
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