题目内容
一位同学做飞镖游戏,已知圆盘直径为d,飞镖距圆盘为L,且对准圆盘上边缘的A点水平抛出,初速度为v0,飞镖抛出的同时,圆盘以垂直圆盘且过盘心O的水平轴匀速转动,角速度为w。若飞镖恰好击中A点,则下列关系中正确的是: ( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250007272041230.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250007272041230.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
B
试题分析:飞镖抛出后做平抛运动,若飞镖恰好击中A点,设时间为
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727297267.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727344465.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727360665.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727375737.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727297267.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727391635.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727406614.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727344465.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727250835.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727406614.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727360665.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000727484959.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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A.![]() |
B.![]() |
C.![]() |
D.![]() |