恢复系数的测量  

Measurement of restitution coefficient

作　　者：耿宏章[1] 张卫强[1] 周开学[1] 

机构地区：[1]石油大学(华东)应用物理系,山东东营257061

出　　处：《物理实验》2003年第1期39-41,共3页Physics Experimentation

摘　　要：考虑到空气的粘性 ,理论计算了弹力球的运动位移随时间的变化规律 .从一定高度释放弹力球 ,实验测量不同弹跳次数所需时间 ,运用级数理论 ,得出弹力球与桌面碰撞时的恢复系数 ,并提出了 3种实验方案 .With regard to air viscosity, the law of time dependent displacement of elastic ball is studied in theory. The time that the ball takes to bounce for different times is calculated. Using the theory of progression, the restitution coefficient of the ball bumping with the surface of the desk is derived. Three experimental methods are achieved to measure the coefficient of restitution. Both theoretical calculation and experimental results show that the effect of air viscosity on the coefficient of restitution can be neglected.

关 键 词：测量 恢复系数 等比级数 粘性 弹力球 物理实验 

分 类 号：O343[理学—固体力学]