大学物理 ›› 2006, Vol. 25 ›› Issue (10): 16-16.
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蔡志东[1] 陆建隆[2]
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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
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蔡志东[] 陆建隆[]. 考虑空气阻力时铅球最佳投掷角的参数方程和实用方程[J]. 大学物理, 2006, 25(10): 16-16.
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