如图所示,天花板上有一可自由转动的光滑小环
,一轻绳穿过
,两端分别连接质量为
、
的A、B小球,且
,两小球分别在各自的水平面内做圆周运动,它们周期相等。则A、B小球到小环
的距离
、
的比值
为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/16/6d964b32-4eb2-4f1f-9dd6-612418c352a1.png?resizew=92)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ecb1589c3cc179e2f62507020771e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ecb1589c3cc179e2f62507020771e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ab1256702aef4e9f1a5eb6c12ecc96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbd67f60f04c278bdd867fdb3979dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/718a8720a3f5902420b492a57d3c5eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ecb1589c3cc179e2f62507020771e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2fa55f250f2f6e98c7cfa720ca1083.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/16/6d964b32-4eb2-4f1f-9dd6-612418c352a1.png?resizew=92)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-04-27 15:39:02
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【推荐1】质量为50kg的体操运动员做“单臂大回环”,用一只手抓住单杠,伸展身体,以单杠为轴做圆周运动,如图所示,此过程中,运动员到达最低点时手臂受的拉力至少约为(忽略空气阻力,
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【推荐2】如图所示,将完全相同的两个小球A、B,用长L=0.4m的细绳悬于以
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/470944b7-b7f4-414e-8dfe-6cd974f1328c.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/470944b7-b7f4-414e-8dfe-6cd974f1328c.png?resizew=158)
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