| 建议不引入对动点的绝对动量矩定理 |
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| 引用本文： | 杜茂林,方秦,陈国良.建议不引入对动点的绝对动量矩定理[J].华中科技大学学报(城市科学版),2008,25(4). |
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| 作者姓名： | 杜茂林 方秦 陈国良 |
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| 作者单位： | 解放军理工大学,江苏,南京,210007 |
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| 摘 要： | 对动点绝对动量矩定理的引入使理论力学的动量矩定理部分概念太多不便应用。繁琐的原因是绝对动量矩的概念为两个坐标系中观察到的量的合成,而合理的概念应为对动点的相对动量矩。通过例题验证了应用对动点的绝对动量矩定理计算比用对动点的相对动量矩定理复杂。
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| 关 键 词： | 质点系 动坐标系 动量矩 |
Unnecessary to Introduce the Theorem of Absolute Angular Momentum of System of Particles about a Moving Point |
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| DU Mao-lin,FANG Qin,CHEN Guo-liang.Unnecessary to Introduce the Theorem of Absolute Angular Momentum of System of Particles about a Moving Point[J].Journal of Huazhong University of Science and Technology,2008,25(4). |
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| Authors: | DU Mao-lin FANG Qin CHEN Guo-liang |
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| Abstract: | The introduction of the theorem of absolute angular momentum about a moving point brought too many concepts in dynamics to be used conveniently.The conceptual complexity of the theorem results from that the absolute angular momentum about a moving point is the combination of two quantities observed in different coordinate systems.The reasonable concept is the relative angular momentum about a moving point.The case study shows that it is easy to solve a problem with the relative angular momentum than with the absolute angular momentum about a moving point. |
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| Keywords: | system of particles moving coordinate system angular momentum |
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