摘要
对网球拍击球一瞬间的冲击过程,采用一种简化的力学模型建立起动力学方程,通过数学推演,详尽地分析了网球拍弦张力与击球速度分离时间、分离距离之间的关系,得出弦张力较小时易于得到较大的击球速度,且与此对应有较长的分离时间和较大的分离距离,反之亦然。还从运动实践上分析了合理选择弦张力的依据。
A dynamical equation is established based on a simplified mechanics model for the collision between tennis racket and the ball within very short time, and the relationships between the string tension of the racket and the velocity of the tennis ball, separate time, and separate distance are analyzed. It is concluded that the ball would gain higher velocity if the string tension is weaker. Correspondingly, the separate time and the separate distance will increase.
出处
《力学与实践》
CSCD
北大核心
2004年第4期63-65,6,共4页
Mechanics in Engineering
关键词
弹性系数
分离速度
分离时间
分离距离
动力学
elastic modulus, separate velocity, separate moment, separate distaace
