简谐运动是一种周期性的变加速运动,它的运动规律比较复杂,在教学中,我们可利用“参考圆”来研究其运动.一个做匀速圆周运动的质点m,它在x轴或y轴上的投影是做简谐运动的.因此,对于每一个简谐运动,都可以找到一个匀速圆周运动,使其投影的运动情况与这个简谐运动同步.这个匀速圆周运动的轨迹叫做与之相对应的简 Simple harmonic motion is a periodic variable speed motion, its movement is more complicated, in teaching, we can use “reference circle ” to study the motion of a constant circular motion mass m, it is in the x The projection on the axis or the y-axis is a simple harmonic motion, so that for every simple harmonic motion, a uniform circular motion can be found that synchronizes the motion of its projection with this simple harmonic motion. The trajectory of this constant circular motion Called the corresponding Jane