轻弹簧及其相连物构成的系统运动过程复杂、条件隐蔽,使得涉及轻弹簧的问题成了学习的难点。弹簧问题不仅能全方位考查考生分析物理过程、建立正确物理图景和知识迁移的能力,也能反映学生学习潜能的大小。因而,弹簧问题亦成为考试的难点与热点。轻弹簧中的功能问题大多涉及弹簧的形变、弹力、弹力做功、弹性势能等物理概念,这几个概念中最核心的问题是弹力做功,由于弹力F=kx,可见弹力的变化与物体移动的位移呈线性关系,即弹力做功 Light spring and its associated system consisting of the system movement complex, hidden conditions, making the issue involving light springs has become a learning difficulty. The spring problem can not only comprehensively examine the examinee’s ability to analyze the physical process, establish the correct physical picture and knowledge transfer, but also reflect the students’ learning potential. Therefore, the spring problem has also become a test of the difficulties and hot spots. Most of the functional problems in light springs involve physical concepts such as spring deformation, elastic force, elastic force, and elastic potential energy. The core issue in these concepts is elastic work. Since the elastic force F = kx, it can be seen that the change of elastic force and the movement of the object Displacement is a linear relationship, that stretch to do work