在《动量》这章知识中学生对于绳的瞬间冲量问题感觉比较难处理,往往遇到这类问题就会不知道如何分析,下面对于有关弹性绳和非弹性绳产生的瞬间冲量来分析和总结一下.一般产生弹力的绳可分为两类.一类是两端连有物体的弹簧或橡皮条,它们的形变量较大(相对而言).形变发生改变的过程因两端物体的惯性而需时较长.在很短时间内,形变量可 In the “Momentum” chapter, students feel more difficult to deal with the momentary impulse problem of ropes. They often do not know how to analyze these types of problems. The following analysis and summarization of the momentary impulses related to elastic ropes and inelastic ropes Generally, elastic ropes can be divided into two types. One is springs or rubber strips with objects attached to both ends. Their deformations are relatively large (relatively speaking). The process of deformation changes due to the inertia of the objects at both ends. It takes a long time. In a very short time, the deformation can be