如图所示一直角斜面固定在水平地面上右边斜面倾角为60°左边斜面倾角为30°ab两物体分别系于一根跨过定�轮的轻绳两端置于两斜面上 Template




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tomski如图所示一直角斜面固定在水平地面上右边斜面倾角为60°左边斜面倾角为30°ab两物体分别系于一根跨过定�轮的轻绳两端置于两斜面上 coloring