如图所示AOB为轻质杠杆,O为支点,圆柱体C的密度为3*10³Kg/m,质量为60kg
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![如图所示AOB为轻质杠杆,O为支点,圆柱体C的密度为3*10³Kg/m,质量为60kg](/uploads/image/z/13231250-26-0.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BAAOB%E4%B8%BA%E8%BD%BB%E8%B4%A8%E6%9D%A0%E6%9D%86%2CO%E4%B8%BA%E6%94%AF%E7%82%B9%2C%E5%9C%86%E6%9F%B1%E4%BD%93C%E7%9A%84%E5%AF%86%E5%BA%A6%E4%B8%BA3%2A10%26%23179%3BKg%2Fm%2C%E8%B4%A8%E9%87%8F%E4%B8%BA60kg)
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