大学物理 ›› 2010, Vol. 29 ›› Issue (8): 25-25.

• 著者文摘 • 上一篇    下一篇

单摆近似周期的新形式及构造分析

薛德胜 周钊 高美珍   

  1. 兰州大学物理科学与技术学院,甘肃兰州730000
  • 出版日期:2010-08-25 发布日期:2010-08-20

A new approximate formula and some analyses on constructing for the period of a simple pendulum

  • Online:2010-08-25 Published:2010-08-20

摘要: 通过对比单摆严格周期的级数展开式,给出了一个新的单摆周期近似公式及其修正形式.在振幅小于114°(136°)的范围内,近似公式(修正形式)的计算结果相对于严格周期的数值计算结果相对误差小于1‰.同时,对单摆近似周期的构造进行了分析.

关键词: 单摆, 周期, 近似解, 级数展开

Abstract: Comparing with the series expansion of the exact period,a new approximate fornmla and its modulated form for the period of the simple pendulum are presented.The constructed formula and its modulated form can be applied in the amplitudes of 114° and 136°,respectively,its relative error is less than 1‰.Some analyses on constructing of the period of a simple pendulum are discussed.

Key words: simple pendulum, period, approximate solution, series expansion

中图分类号: 

  • O313.1