把杠杆架在铁架台上,支点O到杠杆两端点A和B的距离之比为AO:OB=1:2……如图,把杠杆架在铁架台上,支点O到杠杆两端点A和B的距离之比为AO:OB=1:2,A端挂一质量为mA=1kg的空桶,B端挂质量为mB=1.6k
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![把杠杆架在铁架台上,支点O到杠杆两端点A和B的距离之比为AO:OB=1:2……如图,把杠杆架在铁架台上,支点O到杠杆两端点A和B的距离之比为AO:OB=1:2,A端挂一质量为mA=1kg的空桶,B端挂质量为mB=1.6k](/uploads/image/z/295542-54-2.jpg?t=%E6%8A%8A%E6%9D%A0%E6%9D%86%E6%9E%B6%E5%9C%A8%E9%93%81%E6%9E%B6%E5%8F%B0%E4%B8%8A%2C%E6%94%AF%E7%82%B9O%E5%88%B0%E6%9D%A0%E6%9D%86%E4%B8%A4%E7%AB%AF%E7%82%B9A%E5%92%8CB%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B9%8B%E6%AF%94%E4%B8%BAAO%EF%BC%9AOB%3D1%EF%BC%9A2%E2%80%A6%E2%80%A6%E5%A6%82%E5%9B%BE%2C%E6%8A%8A%E6%9D%A0%E6%9D%86%E6%9E%B6%E5%9C%A8%E9%93%81%E6%9E%B6%E5%8F%B0%E4%B8%8A%2C%E6%94%AF%E7%82%B9O%E5%88%B0%E6%9D%A0%E6%9D%86%E4%B8%A4%E7%AB%AF%E7%82%B9A%E5%92%8CB%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B9%8B%E6%AF%94%E4%B8%BAAO%EF%BC%9AOB%3D1%EF%BC%9A2%2CA%E7%AB%AF%E6%8C%82%E4%B8%80%E8%B4%A8%E9%87%8F%E4%B8%BAmA%3D1kg%E7%9A%84%E7%A9%BA%E6%A1%B6%2CB%E7%AB%AF%E6%8C%82%E8%B4%A8%E9%87%8F%E4%B8%BAmB%3D1.6k)
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