摘要
空气阻力系数是计算空气阻力的一个重要参数,与物体的迎风面积、表面光滑程度和形状有关。由于人体是一个不规则的形状,其空气阻力系数一般较难得到。本文把人在荡秋千时的运动巧妙地近似为一个单摆的阻尼振动,运用智能手机和Tracker软件,通过拍摄人荡秋千的过程,拟合出人体作阻尼振动时振幅随时间的变化曲线,并根据阻尼振动的相关计算公式得到人体的空气阻力系数。
Air resistance coefficient is an important parameter in calculating air resistance,which is related to windward area,surface smoothness and shape of an object.Because the human body is an irregular shape,its air resistance coefficient is generally difficult to obtain.In this paper,the movement of a person in the swing is skillfully approximated to the damped vibration of a single pendulum.Through shooting the process of human swing by using the smart phone and tracker software,variation curve of amplitude of the human body’s damped vibration with time is fitted.Then,the air resistance coefficient of human body is obtained according to the formula of damping vibration.
作者
张玖琪
丁益民
郭雪如
徐瑶
徐钱欣
ZHANG Jiuqi;DING Yimin;GUO Xueru;XU Yao;XU Qianxin(Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430000)
出处
《物理与工程》
2022年第1期150-154,共5页
Physics and Engineering
基金
湖北省教育科学规划专项资助
中学物理实验的混合式教学模式研究(2020ZB37)。
