一、圆柱体模型的运用(1)所取的圆柱体必须有代表性。即所取的圆柱体应该具有物体的某些物理特征,如代表物体的受力特征,运动特征,状态特征等等。(2)所选的圆柱体必须与所求物理量相关联,这样才能通过对圆柱体的研究得到问题的解决。(3)所选的圆柱体要尽量的简单,这样易于解决问题。 First, the use of cylindrical model (1) the cylinder taken must be representative. That is to say, the cylinder should have certain physical characteristics of the object, such as the force characteristics, the movement characteristics, the state characteristics and so on. (2) The selected cylinder must be related to the physical quantity sought, so that the problem can be solved by studying the cylinder. (3) The selected cylinder to be as simple as possible, so easy to solve the problem.