大学物理 ›› 2006, Vol. 25 ›› Issue (10): 16-16.

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考虑空气阻力时铅球最佳投掷角的参数方程和实用方程

蔡志东[1] 陆建隆[2]   

  1. [1]镇江高等专科学校(丹阳校区)教师教育系,江苏丹阳212300 [2]南京师范大学物理科学与技术学院,江苏南京210097
  • 出版日期:2006-10-25 发布日期:2006-10-20

Parameter equation angle of a and practical equation shot in considering air of optimum putting resistance

  • Online:2006-10-25 Published:2006-10-20

摘要: 指出了一些文章在讨论有空气阻力作用时关于球类运动的微分方程中存在的问题,得出了空气阻力与速度平方成正比时的微分方程及近似解,计算了最佳投掷角的参数方程,还导出了空气阻力与速度成正比时铅球最佳投掷角的实用方程.

关键词: 变系数微分方程组, 近似解, 参数方程, 最佳投掷角, 实用方程

Abstract: The serious errors of differential equation about ball games considering air resistance in some magazines are pointed out; right differential equation on condition that the air resistance is directly proportional to square of velocity and its approximate solution and the parameter equation computing the optimum putting angle of a shot are given. Meanwhile the practical equation of optimum putting angle of a shot on condition that the air resistance is directly proportional to velocity are also deduced.

Key words: changeable coefficient differential equationoptimum putting angle, practical equationgroup, approximate solution, parameter equation

中图分类号: 

  • O331.1