一道初二物理竞赛试题,如图所示,将一把刻度尺一段悬挂,另一端垂到玻璃缸内,当向缸内注入甲液体浸没尺的某一刻度时,尺与竖直方向的夹角为30°,倒掉甲液体,注入乙液体使尺与竖直方向成60
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![一道初二物理竞赛试题,如图所示,将一把刻度尺一段悬挂,另一端垂到玻璃缸内,当向缸内注入甲液体浸没尺的某一刻度时,尺与竖直方向的夹角为30°,倒掉甲液体,注入乙液体使尺与竖直方向成60](/uploads/image/z/2436278-14-8.jpg?t=%E4%B8%80%E9%81%93%E5%88%9D%E4%BA%8C%E7%89%A9%E7%90%86%E7%AB%9E%E8%B5%9B%E8%AF%95%E9%A2%98%2C%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%B0%86%E4%B8%80%E6%8A%8A%E5%88%BB%E5%BA%A6%E5%B0%BA%E4%B8%80%E6%AE%B5%E6%82%AC%E6%8C%82%2C%E5%8F%A6%E4%B8%80%E7%AB%AF%E5%9E%82%E5%88%B0%E7%8E%BB%E7%92%83%E7%BC%B8%E5%86%85%2C%E5%BD%93%E5%90%91%E7%BC%B8%E5%86%85%E6%B3%A8%E5%85%A5%E7%94%B2%E6%B6%B2%E4%BD%93%E6%B5%B8%E6%B2%A1%E5%B0%BA%E7%9A%84%E6%9F%90%E4%B8%80%E5%88%BB%E5%BA%A6%E6%97%B6%2C%E5%B0%BA%E4%B8%8E%E7%AB%96%E7%9B%B4%E6%96%B9%E5%90%91%E7%9A%84%E5%A4%B9%E8%A7%92%E4%B8%BA30%C2%B0%2C%E5%80%92%E6%8E%89%E7%94%B2%E6%B6%B2%E4%BD%93%2C%E6%B3%A8%E5%85%A5%E4%B9%99%E6%B6%B2%E4%BD%93%E4%BD%BF%E5%B0%BA%E4%B8%8E%E7%AB%96%E7%9B%B4%E6%96%B9%E5%90%91%E6%88%9060)
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