题目内容
在皮带轮传动装置中,已知大轮的半径是小轮半径的3倍,A和B两点分别在两轮的边缘上,C点离大轮轴距离等于小轮半径,若皮带不打滑,则角速度之比ωA:ωB:ωC= ________,线速度之比vA:vB:vC= ________,向心加速度之比aA:aB:aC= _________。![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241930472304449.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241930472304449.png)
3:1:1 3:3:1 9:3:1
试题分析:对于A、B两点:皮带不打滑,A和B两点线速度大小相等.由公式
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193047651475.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193048244787.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193048852597.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193049414738.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193049913594.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193050490744.png)
点评:本题难度较小,本题是圆周运动中典型问题,关键抓住相等量:皮带不打滑时,两轮边缘上各点的线速度大小相等;同一轮上各点的角速度相同
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目