怎么耍杂技球_杂技小球

(资料图片)

一、题文

根拉为子合般还至应速集能头战子第压支之支“水流星”是一种常见的杂技项目根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支,根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支该运动可以简化为轻绳一端系着小球在竖直平面内的圆周运动模型根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支,根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支如图所示根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支,根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支已知绳长为根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支l根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支,根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支重力加速度为根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支g根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支,根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支则根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支()根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支A. 小球运动到最低点根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支Q根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支时，处于失重状态根拉为子合般还至应速集能头战子第压支之支B. 小球初速度根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支v根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支0根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支越大，则在根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支P根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支、根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支Q根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支两点绳对小球的拉力差越大根拉为子合般还至应速集能头战子第压支之支C. 当根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支v根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支0根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支>根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支6根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支g根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支l根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支−根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支−根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支−根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支√根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支时，小球一定能通过最高点根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支P根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支D. 当根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支v根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支0根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支<根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支g根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支l根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支−根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支−根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支√根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支根拉为子合般还至应速集能头战子第压支之支时，细绳始终处于绷紧状态根拉为子合般还至应速集能头战子第压支之支

二、解答

中等口而提规满斯前战各起花求例角A. 小球在最低点时。重力与拉力的合力提供向心力，所以小球受到的拉力一定大于重力，小球处于超重状态。故中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角A中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角错误；中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角B. 设小球在最高点的速度为中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角,中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角最低点的速度为中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角;中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角由动能定理得：中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角(2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角)中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角…中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角①中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角球经过最高点，如图1：中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角P中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角:中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角+中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角F中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角…中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角②中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角球经过最低点中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角Q中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角时，受重力和绳子的拉力，如图2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角根据牛顿第二定律得到中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角,中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角F中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角…中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角③中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角联立①②③解得：中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角F中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角F中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角6中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角，与小球的速度无关。故中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角B中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角错误；中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角C. 球恰好经过最高点中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角P中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角,中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角速度取最小值中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角,中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角故只受重力中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角,中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角重力提供向心力：中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角3中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角,中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角得：中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角3中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角√中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角…中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角④中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角小球以中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角0中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角向上运动到最高点时：由动能定理得：中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角(2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角)中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角0中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角4中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角…中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角⑤中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角得：中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角4中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角√中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角>中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角√中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角3中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角所以小球一定能够过最高点。故中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角C中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角正确；中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角D. 若中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角0中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角<中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角−中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角√中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角,中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角设小球能够上升的最大高度中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角h中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角:中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角由机械能守恒得：中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角h中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角v中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角0中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角=中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角1中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角2中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角m中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角g中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角所以：中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角h中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角<中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角l中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角小球上升的最高点尚不到与中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角O中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角水平的高度，所以细绳始终处于绷紧状态。故中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角D中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角正确。中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角故选：中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角C中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角D中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角中等口而提规满斯前战各起花求例角

三、分析

离须小球在最高点绳子的拉力与重力的合力提供向心力，在最低点也是绳子的拉力与重力的合力提供向心力，可根据牛顿第二定律列式求解，同时小球从最高点运动得到最低点的过程中，只有重力做功，可运用动能定理列式求解．离须

本文到此结束，希望对大家有所帮助。

关键词：