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。
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.
出处
《华中科技大学学报（城市科学版）》
CAS
2008年第4期189-191,共3页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金(50525825)
关键词
质点系
动坐标系
动量矩
system of particles
moving coordinate system
angular momentum
