【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 .理论计算和实验测量结果均表明空气的粘性对测量结果影响很小更多还原

【Abstract】 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.更多还原