1.蹦极现象概述蹦极者在蹦极过程中的受力状况是各不相同的,以蹦极者下落过程为例,在弹簧绳未被全部展开时,蹦极者处于自由落体状态,其弹簧拉力为零;在弹簧绳开始拉伸时,蹦极者做加速度逐渐减小的运动,但是蹦极者下落的速度仍然在增加,蹦极者受到向上的弹力;当蹦极者的加速度减少至零时,此时速度达到最大值,弹簧绳的拉力等于重力;由于惯性作用,弹簧绳继续被拉伸,蹦极者做速度逐渐减小的运动,直到速度 1. Bungee jumping phenomenon Bungee jumping in the process of bungee force is different, with the bungee drop process, for example, when the spring rope is not fully deployed, the bungee jumping in a free fall state, the spring tension is zero ; When the spring rope starts to stretch, the bungee jumping person does less acceleration, but the bungee’s falling speed is still increasing and the bungee jumping person’s upward elasticity. When the bungee’s acceleration decreases to zero, the speed reaches Maximum, the tension of the spring rope is equal to gravity; due to the inertia, the spring rope continues to be stretched, and the bungee jumping person makes the motion of decreasing speed until the speed