题目内容
如图所示皮带转动轮,大轮直径是小轮直径的3倍,A是大轮边缘上一点,B是小轮边缘上一点,C是大轮上一点,C到圆心O1的距离等于小轮半径。转动时皮带不打滑,则A、B、C三点的线速度之比vA:vB: vC=______________角速度之比ωA,向心加速度大小之比aA:aB:aC=_____________。![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135115029494.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135115029494.png)
2:2:1 2:4:1
本题考查皮带传动轮问题,由
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![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135115201454.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135115263463.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135115341712.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135115419546.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241351155131129.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241351156381079.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135115903727.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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