| 一个球体在水中移动做功问题的辨析 |
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| 引用本文： | 石业娇. 一个球体在水中移动做功问题的辨析[J]. 辽宁师专学报(自然科学版), 2014, 16(3): 21-23 |
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| 作者姓名： | 石业娇 |
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| 作者单位： | 大连海洋大学应用技术学院,辽宁大连,116300 |
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| 摘 要： | 给出一个均匀质球体在水中垂直移动做功问题的完整解法.指出,在解决均匀球体在水中垂直移动做功问题时,计算浮力函数是关键所在.而浮力函数的计算,首先要建立在对浮力做功的正确认知与理解之上.只有对球体在水中移动时所受到的浮力做出正确的分析,才能在计算浮力函数时选择恰当的积分限,从而得出正确的结果.
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| 关 键 词： | 球体 密度 浮力 做功 |
Differentiation and analysis of the work done by a sphere moving in the water |
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| SHI Ye-jiao. Differentiation and analysis of the work done by a sphere moving in the water[J]. Journal of Liaoning Teachers College(Natural Science Edition), 2014, 16(3): 21-23 |
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| Authors: | SHI Ye-jiao |
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| Affiliation: | SHI Ye-jiao (Applied Technology College of Dalian Ocean University, Dalian Liaoning 116300) |
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| Abstract: | A though solution to the problem concerning the work done by a homogeneous sphere moving perpendicularly in the water is demonstrated. The vital procedure lies in the calculation of buoyant force function which should, first and foremost, be based on the correct cognition and understanding of the work from buoyant force. Only by analyzing correctly the buoyant force from the movement of a sphere in the water can the proper integral limit be chosen in calculating buoyant force function, hence a correct result. |
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| Keywords: | sphere density buoyant force work |
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