论文部分内容阅读
第三章匀速圆周运动万有引力定律这一章包括匀速圆周运动和万有引力两部分内容。这两部分内容在必修课中涉及得不多,在选修课中属于新知识。教材在匀速圆周运动部分,先复习必修课中已讲过的匀速圆周运动的运动学部分知识,然后讲述向心力、向心加速度等有关匀速圆周运动中动力学方面的知识。这部分知识可以看作是上一章曲线运动内容的扩展、牛顿定律在特殊领域的运用,其中向心力、向心加速度的内容是这部分知识的重
Chapter 3 Constant Speed Circular Motion The Law of Gravitational Gravitation This chapter includes the content of uniform velocity circular motion and universal gravitation. These two parts do not involve much in the required courses, and they are new knowledge in elective courses. In the uniform circular motion part of the textbook, first review the kinematics knowledge of the uniform circular motion that has already been taught in the required course, and then describe the dynamics of the constant velocity circular motion, such as centripetal force and centripetal acceleration. This part of the knowledge can be regarded as an extension of the content of the curve motion in the previous chapter. Newton’s law is used in special fields. The content of centripetal force and centripetal acceleration is the weight of this part of the knowledge.