This means that the potential energy at position no. 2 just depends on the increase in height of the center of mass of the vaulter ( as seen in the diagram ) .
这意味着,在位置no.2上的势能决定于运动员重心高度的增加(如图所示)。
In this case , let me start with position no. 1 right at the end of the vaulter 's run and position no. 2 when the vaulter is at the highest point .
在本例中,考虑撑杆跳运动员奔跑结束的位置no.1和运动员达到最高点时的位置no.2。
World class pole vaulter shatters pole .
世界级的撑竿跳打破北极。
What are the most important qualities of a pole vaulter ?