| 用动能定理讨论三线摆的扭转振动 |
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| 引用本文： | 何勤. 用动能定理讨论三线摆的扭转振动[J]. 大学物理, 2005, 24(8): 47-50 |
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| 作者姓名： | 何勤 |
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| 作者单位： | 江苏大学,物理系,江苏,镇江,212003 |
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| 摘 要： | 建立了摆的动力学方程，导出了动能定理的微分表达式和积分表达式，用MATLAB软件编程画出了转动动能、平动动能与角坐标间的关系曲线，分析了平动动能对振动周期的影响。
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| 关 键 词： | 三线摆 动能定理 转动动能 平动动能 振动周期 |
| 文章编号： | 1000-0712（2005）08-0047-04 |
| 收稿时间： | 2004-08-30 |
| 修稿时间： | 2004-08-30 |
A discussion of the torsion vibration of three-line pendulum using kinetic energy theorem |
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| HE Qin. A discussion of the torsion vibration of three-line pendulum using kinetic energy theorem[J]. College Physics, 2005, 24(8): 47-50 |
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| Authors: | HE Qin |
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| Abstract: | The dynamic equations of three-line pendulum are given, the differential and integral expressions of kinetic energy theorem are derived. The variation curves of rotational kinetic energy and translational kinetic energy changing with angle coordinate are drawn using MATLAB. The influence of translational kinetic energy on the period of vibration is analyzed. |
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| Keywords: | three-line pendulum kinetic energy theorem rotational kinetic energy translational kinetic energy period of vibration |
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