竖直平面内圆周运动问题是近几年高考的重要考查内容之一.它结合了曲线运动的向心力及动能定理等几个重要考点,是高三学生及教师必须重点复习并拓展的重要题型.该题型要求学生具有一定的思维深度与广度,且两种模 The circular motion in the vertical plane is one of the important examinations of the college entrance examination in recent years.It combines several important test centers such as the centripetal force and kinetic energy theorem of curvilinear motion and is an important type of examinations that must be reviewed and expanded by senior high school students and teachers. The questions require students to have a certain depth and breadth of thinking, and two kinds of molds