如图:AB为一根均匀杆,长度为L,OA、OB为等杆长度的绳子,杆、绳质量不计.C为AB中点、D为AC中点,C、D处挂重物分别为G2、G1.过A点的红线为水平线,其与AB夹角为θ.系统处于平衡状态下,求θ的大小.(
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![如图:AB为一根均匀杆,长度为L,OA、OB为等杆长度的绳子,杆、绳质量不计.C为AB中点、D为AC中点,C、D处挂重物分别为G2、G1.过A点的红线为水平线,其与AB夹角为θ.系统处于平衡状态下,求θ的大小.(](/uploads/image/z/13807403-35-3.jpg?t=%E5%A6%82%E5%9B%BE%EF%BC%9AAB%E4%B8%BA%E4%B8%80%E6%A0%B9%E5%9D%87%E5%8C%80%E6%9D%86%2C%E9%95%BF%E5%BA%A6%E4%B8%BAL%2COA%E3%80%81OB%E4%B8%BA%E7%AD%89%E6%9D%86%E9%95%BF%E5%BA%A6%E7%9A%84%E7%BB%B3%E5%AD%90%2C%E6%9D%86%E3%80%81%E7%BB%B3%E8%B4%A8%E9%87%8F%E4%B8%8D%E8%AE%A1.C%E4%B8%BAAB%E4%B8%AD%E7%82%B9%E3%80%81D%E4%B8%BAAC%E4%B8%AD%E7%82%B9%2CC%E3%80%81D%E5%A4%84%E6%8C%82%E9%87%8D%E7%89%A9%E5%88%86%E5%88%AB%E4%B8%BAG2%E3%80%81G1.%E8%BF%87A%E7%82%B9%E7%9A%84%E7%BA%A2%E7%BA%BF%E4%B8%BA%E6%B0%B4%E5%B9%B3%E7%BA%BF%2C%E5%85%B6%E4%B8%8EAB%E5%A4%B9%E8%A7%92%E4%B8%BA%CE%B8.%E7%B3%BB%E7%BB%9F%E5%A4%84%E4%BA%8E%E5%B9%B3%E8%A1%A1%E7%8A%B6%E6%80%81%E4%B8%8B%2C%E6%B1%82%CE%B8%E7%9A%84%E5%A4%A7%E5%B0%8F.%28)
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