大学物理 ›› 2009, Vol. 28 ›› Issue (2): 15-15.

• 著者文摘 • 上一篇    下一篇

球在可自由移动的球形空腔内作纯滚动的运动分析

王树平 苏景顺 李彩娟 崔红娜   

  1. 河北建筑工程学院数理系,河北张家口075024
  • 出版日期:2009-02-25 发布日期:2009-02-20

Analysis of completely rolling of a sphere in a freely moving sphere cavity

  • Online:2009-02-25 Published:2009-02-20

摘要: 对在光滑水平面上可自由移动的球形空腔内作纯滚动的球的运动进行分析,给出球心及其边缘上任意一点在静止参考系中的运动轨迹方程,并绘出它们相应的轨迹,求出球在球形空腔内平衡位置附近作小振动的周期,并和球在可自由移动的球形空腔内作纯滑动的情况作了比较.

关键词: 纯滚动, 运动轨迹, 周期

Abstract: The motion of a sphere' completely rolling in a freely moving sphere cavity on a smooth horizontal plane is investigated. The track equation of mass center of sphere and its any point on the edge of sphere in the inertial frame of reference are deduced, and their tracks are plotted. The period of tiny vibration of the sphere near the equilibrium position inside the sphere cavity is calculated, which is also compared with that of the sphere completely gliding inside a freely moving sphere cavity.

Key words: completely roll, kinetic track, period

中图分类号: 

  • O313.1