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简谐运动的特点是具有往复性,相对平衡位置对称的两点,加速度、回复力、位移均为等值反向,速度可能相同也可能等值反向,动能、势能却一定相同。在实际问题中利用这些特点分析问题,往往会收到事半功倍的效果。一、运动时间的对称性例1.如图1所示,一个质点在平衡位置O点附近做简谐运
Simple harmonic motion is characterized by reciprocity and relative equilibrium position symmetrical two points. Acceleration, restoring force and displacement are all opposite in value, speed may be same or opposite in value, kinetic energy and potential energy will be the same. In the actual problems in the use of these characteristics analysis of the problem, often will receive a multiplier effect. First, the symmetry of exercise time Example 1 As shown in Figure 1, a particle in the equilibrium position near the point O to do harmonic operation