物理最高点与几何最高点谷清山（河北大名一中０５６９００）⒇不论是物理教材还是各种复习资料所出现的有关竖直平面内圆周运动的习题，它们的物理最高点与几何最高点都重合在一点，所以，给学生的印象是，凡在竖直平面内的圆周运动，其几何最高点就是竖直平面内圆周运动... The highest point of physics and the highest point of the geometry Gushan (Guangdong, Dazhong No. 056900) (20) Whether it is physical textbooks or exercise materials related to circular motion in the vertical plane, their physical and geometric points coincide with each other. At one point, therefore, the impression given to students is that where the circular motion in the vertical plane, the geometric highest point is the vertical plane of circular motion...