一、问题的产生高中物理人教版必修二第五章第一节曲线运动中,在探究物体做曲线运动的条件时,教材给出了如下演示实验:如下图所示,一个在水平面上做直线运动的钢球,从侧面给它一个力,例如在钢球运动路 First, the problem arises high school physics teaching plate compulsory two chapter five chapter first section of the curve movement, in the exploration of the object to do the conditions of the curve movement, the textbook gives the following demonstration experiment: as shown in the figure below, one on the horizontal surface to do The steel ball moves in a straight line, giving it a force from the side, for example in the ball movement path