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在轻质模型(绳、杆和弹簧)中,由于m=0,无论轻质模型处于静止还是变速运动中,根据F_合=ma,都有F合=0.但如果是有质量的绳子、铁链和电缆等问题,由于其自重作用,研究对象的质量、形状等可能发生变化,更需要灵活选取研究对象、采用巧妙方法,方能求解.本文从平衡问题、动力学问题、能量问题等三个方面分类总结匀质柔链问题的解题策略.一、平衡问题(悬链问题)日常生活中,我们常常可以看到这些情景:两端固定的一条悬空的绳子、架设在两根电线杆之间的输电线、横跨在两根柱子之间的铁链.如图1、图2分别为悬点等高和不等高
In light models (ropes, rods, and springs), F = 0 due to m = 0 regardless of whether the lightweight model is in stationary or variable speed motion, has F = 0. However, if it is a quality rope , Chains and cables, the quality and shape of the research object may change due to their own weight, and the research object needs to be flexibly selected, and the ingenious method can be used to solve the problems.In this paper, the balance problems, the dynamics problems, the energy problems Etc. In the daily life, we can often see these scenarios: a suspended rope fixed at both ends, erected in two Transmission lines between poles, across the chain between the two pillars.As shown in Figure 1, Figure 2, respectively, such as dangling contour and unequal