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116问答网 > 球体在水中如果被弹簧拉着，受力分析应该是怎样

球体在水中如果被弹簧拉着，受力分析应该是怎样

2025-04-04 14:56:43

推荐回答（1个）

回答1：

（1）球的材料的密度大于水时，球在水中漂浮（或）悬浮就是空心；球的材料的密度等于水的密度时，球在水中漂浮就是空心；其他情况要根据已知条件计算才知是否空心。至于用什么公式，要看已知条件。
（2）静止在水中的球被弹簧拉着受力分析：当拉力竖直向上时：F浮+F拉+F底部支持＝G物；
当拉力竖直向下时：F浮+F底部支持＝G物+F拉。

若物体没在着底：F底部支持＝0

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