正方形木筏大小为2*2*0.3m^3,由密度为800kg/m^3的木材制成,一位质量为80kg的物理学家站在木筏上,他应该离开木筏中心多远处,才能使木筏一头沉浸在水里?(这句提问的话看不懂求解释)应离开木
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![正方形木筏大小为2*2*0.3m^3,由密度为800kg/m^3的木材制成,一位质量为80kg的物理学家站在木筏上,他应该离开木筏中心多远处,才能使木筏一头沉浸在水里?(这句提问的话看不懂求解释)应离开木](/uploads/image/z/4922540-44-0.jpg?t=%E6%AD%A3%E6%96%B9%E5%BD%A2%E6%9C%A8%E7%AD%8F%E5%A4%A7%E5%B0%8F%E4%B8%BA2%2A2%2A0.3m%5E3%2C%E7%94%B1%E5%AF%86%E5%BA%A6%E4%B8%BA800kg%2Fm%5E3%E7%9A%84%E6%9C%A8%E6%9D%90%E5%88%B6%E6%88%90%2C%E4%B8%80%E4%BD%8D%E8%B4%A8%E9%87%8F%E4%B8%BA80kg%E7%9A%84%E7%89%A9%E7%90%86%E5%AD%A6%E5%AE%B6%E7%AB%99%E5%9C%A8%E6%9C%A8%E7%AD%8F%E4%B8%8A%2C%E4%BB%96%E5%BA%94%E8%AF%A5%E7%A6%BB%E5%BC%80%E6%9C%A8%E7%AD%8F%E4%B8%AD%E5%BF%83%E5%A4%9A%E8%BF%9C%E5%A4%84%2C%E6%89%8D%E8%83%BD%E4%BD%BF%E6%9C%A8%E7%AD%8F%E4%B8%80%E5%A4%B4%E6%B2%89%E6%B5%B8%E5%9C%A8%E6%B0%B4%E9%87%8C%3F%EF%BC%88%E8%BF%99%E5%8F%A5%E6%8F%90%E9%97%AE%E7%9A%84%E8%AF%9D%E7%9C%8B%E4%B8%8D%E6%87%82%E6%B1%82%E8%A7%A3%E9%87%8A%EF%BC%89%E5%BA%94%E7%A6%BB%E5%BC%80%E6%9C%A8)
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