爱

来源：学生作业帮助网编辑：作业帮时间：2024/04/28 07:15:21

爱
爱

爱
平衡后,黄金与皇冠质量相等,沉入水中,受到浮力
若皇冠密度等于黄金,则在此时质量相等的情况下,两者体积也相等,所受浮力也相同.杠杆仍然平衡.
若皇冠不是纯黄金做的,则体积不同,所受浮力不同,杠杆不平衡

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