论文部分内容阅读
文献[1]图文并茂地介绍了“等量分解法”求牵连运动的速度,避免用分解与合成解决牵连运动的速度.但这种方法不是物理教学中的常用方法与主干知识,牛顿运动定理和功能关系才是中学物理的核心.笔者尝试用更加简洁,也更易被学生接受的功能关系解决牵连运动中的速度.原理:系统内一对内力做的总功就是力与力方向的相对位移乘积,若由不发生形变的轻绳、轻杆连接着两物体.则它们对两物体做的总功为0,则做功的功率也为0.
The literature [1] illustrated the speed of implicating motion with “equivalent decomposition method ”, avoiding the speed of implicated movement by decomposition and synthesis.But this method is not the common method and trunk knowledge in physics teaching, and Newtonian motion The relationship between theorem and function is the core of middle school physics.The author tries to use more concise and more easily accepted by students to solve the functional relationship implicated in the speed of movement Principle: a system of internal forces to do a total work force and force direction The product of displacements, if the light rope is not deformed and the light rod connects the two objects, then the total work done by them to the two objects is 0, the power of work is also zero.