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在中学物理中,求解柔索悬挂物的平衡问题,虽有多种方法,但利用力矩法求解时,人们习惯于(或者说局限于)所选择的研究对象为刚性物体.柔索,就其物体本身的特性角度来看,很容易变
In the middle school physics, although there are many ways to solve the problem of the balance of suspended cords, when using the torque method, people are accustomed to (or limited to) the selected object of study as a rigid object. From the point of view of the characteristics of the object itself, it is easy to change