机械能守恒定律指出:如果系统仅在保守力做功的情况下,系统的机械能是守恒的.当我们处理守恒问题时,只要确定了系统个别状态的机械能,列方程便可求出相应的物理量,在此过程中则可以不考虑具体的物理过程(图像).可是在具体的教学中我们能不能因为做功与过程无关这个原因,就不去花 The law of conservation of mechanical energy points out that if the system only performs conservative work, the mechanical energy of the system is conserved. When we deal with the conservation problem, as long as the mechanical energy of the individual states of the system is determined, the column equation can be used to find the corresponding physical quantity. In this process, it is possible not to consider the specific physical process (image). However, in the specific teaching, we can not spend it because the work is not related to the process.