一个重量为W的物体,通过两根绳索AC和BC悬吊(如下图所示).下列四种情况中,绳索AC拉力最大的是()A.α=60°β=30° B.a=30°,β=30° C.a=45°,β=45° D.a=60°β=60°看了个视屏是说夹角越大绳子拉力越大,
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![一个重量为W的物体,通过两根绳索AC和BC悬吊(如下图所示).下列四种情况中,绳索AC拉力最大的是()A.α=60°β=30° B.a=30°,β=30° C.a=45°,β=45° D.a=60°β=60°看了个视屏是说夹角越大绳子拉力越大,](/uploads/image/z/8414804-20-4.jpg?t=%E4%B8%80%E4%B8%AA%E9%87%8D%E9%87%8F%E4%B8%BAW%E7%9A%84%E7%89%A9%E4%BD%93%2C%E9%80%9A%E8%BF%87%E4%B8%A4%E6%A0%B9%E7%BB%B3%E7%B4%A2AC%E5%92%8CBC%E6%82%AC%E5%90%8A%28%E5%A6%82%E4%B8%8B%E5%9B%BE%E6%89%80%E7%A4%BA%29.%E4%B8%8B%E5%88%97%E5%9B%9B%E7%A7%8D%E6%83%85%E5%86%B5%E4%B8%AD%2C%E7%BB%B3%E7%B4%A2AC%E6%8B%89%E5%8A%9B%E6%9C%80%E5%A4%A7%E7%9A%84%E6%98%AF%28%29A.%CE%B1%3D60%C2%B0%CE%B2%3D30%C2%B0+B%EF%BC%8Ea%3D30%C2%B0%2C%CE%B2%3D30%C2%B0+C%EF%BC%8Ea%3D45%C2%B0%2C%CE%B2%3D45%C2%B0+D%EF%BC%8Ea%3D60%C2%B0%CE%B2%3D60%C2%B0%E7%9C%8B%E4%BA%86%E4%B8%AA%E8%A7%86%E5%B1%8F%E6%98%AF%E8%AF%B4%E5%A4%B9%E8%A7%92%E8%B6%8A%E5%A4%A7%E7%BB%B3%E5%AD%90%E6%8B%89%E5%8A%9B%E8%B6%8A%E5%A4%A7%2C)
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