质量为m的小球在竖直平面内沿逆时针方向做半径为R、周期为T的匀速圆周运动。用竖直向下的平行光照射小球,观察到小球在水平面上的投影在做简谐运动。以圆心正下方的O'为原点,x轴正方向如图,以小球在图示位置为起始位置,小球投影的位移(x)随时间(t)的表达式可以表示为________ 。做简谐运动物体的回复力应满足
,我们可以通过某个特殊点求出上述投影运动中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
________ 。
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0f440e7154700ca6c0fd7b77a362c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/14/ed15ca34-967d-4910-a687-7d5957c801d2.png?resizew=194)
更新时间:2023-10-15 20:33:08
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【推荐1】①一根轻弹簧下端固定在水平地面上,质量为
的物块(视为质点)静止于弹簧上端,此时弹簧的压缩量为
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②一列振幅为
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③一个质点以坐标系原点
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④一列简谐横波水平向右传播,某时刻的波形如图所示,
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【推荐1】已知弹簧振子的位移x随时间t变化的表达式为
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第一次到达波谷的过程中,质点
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