初三物理计算题.如图所示,边长为50cm的正方形放在盛有水的容器(足够大)底部,OA=5OB,当用F1=500N竖直向下的拉力时正方体被拉力容器底部.求:(1)正方体的密度是多大?(2)若夹在杠杆A端
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![初三物理计算题.如图所示,边长为50cm的正方形放在盛有水的容器(足够大)底部,OA=5OB,当用F1=500N竖直向下的拉力时正方体被拉力容器底部.求:(1)正方体的密度是多大?(2)若夹在杠杆A端](/uploads/image/z/295570-10-0.jpg?t=%E5%88%9D%E4%B8%89%E7%89%A9%E7%90%86%E8%AE%A1%E7%AE%97%E9%A2%98.%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E8%BE%B9%E9%95%BF%E4%B8%BA50cm%E7%9A%84%E6%AD%A3%E6%96%B9%E5%BD%A2%E6%94%BE%E5%9C%A8%E7%9B%9B%E6%9C%89%E6%B0%B4%E7%9A%84%E5%AE%B9%E5%99%A8%EF%BC%88%E8%B6%B3%E5%A4%9F%E5%A4%A7%EF%BC%89%E5%BA%95%E9%83%A8%2COA%3D5OB%2C%E5%BD%93%E7%94%A8F1%3D500N%E7%AB%96%E7%9B%B4%E5%90%91%E4%B8%8B%E7%9A%84%E6%8B%89%E5%8A%9B%E6%97%B6%E6%AD%A3%E6%96%B9%E4%BD%93%E8%A2%AB%E6%8B%89%E5%8A%9B%E5%AE%B9%E5%99%A8%E5%BA%95%E9%83%A8.%E6%B1%82%EF%BC%9A%EF%BC%881%EF%BC%89%E6%AD%A3%E6%96%B9%E4%BD%93%E7%9A%84%E5%AF%86%E5%BA%A6%E6%98%AF%E5%A4%9A%E5%A4%A7%3F%EF%BC%882%EF%BC%89%E8%8B%A5%E5%A4%B9%E5%9C%A8%E6%9D%A0%E6%9D%86A%E7%AB%AF)
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