论文部分内容阅读
很多圆周运动的习题都需要应用牛顿第二定律,即F_向=m(v/R)或F_向=mRω~2求解.怎样才能正确地列出方程呢? 首先要确定圆周运动所在的平面、圆心的位置和圆周运动的半径.其次对研究对象作出受力图,找出向心力的来源.尤其要分析哪些力沿半径方向指向圆心,哪些力沿半径方向背离圆心,因为向心力正是这些沿半径方向的诸力的合力. 本文介绍在列方程时常用的方法:规定沿
Many circular motions require the application of Newton’s second law, that is, F_ = m (v / R) or F_ = mRω ~ 2. How can we properly list the equations? First of all, we must determine the circular motion Plane, the location of the center of the circle and the radius of the circular motion.Secondly, we make a force map of the object of study to find the source of the centripetal force.We should analyze in particular which forces point to the center of the circle in the radial direction and which forces deviate from the center of the circle in the radial direction Along the radial direction of the force of the force. This article describes the method commonly used in the column equation: