题目内容
(10分)“辽宁号”航母在某次海试中,歼15舰载机降落着舰后顺利勾上拦阻索,在甲板上滑行s=117m停下。设舰载机勾上拦阻索后的运动可视为做匀减速直线运动,航母始终保持静止。已知飞机的质量m="3" x104kg,勾上拦阻索时的速度大小V0=78m/s,求:
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/2014082500301531017408.jpg)
(1)舰载机勾上拦阻索后滑行的时间t;
(2)舰载机滑行过程所受的总阻力f。
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/2014082500301531017408.jpg)
(1)舰载机勾上拦阻索后滑行的时间t;
(2)舰载机滑行过程所受的总阻力f。
(1)
(2) ![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003015342647.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003015326349.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003015342647.png)
试题分析:(1)舰载机勾上拦阻索后做匀减速直线运动,
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003015373695.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003015404666.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003015420528.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003015435701.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003015451713.png)
(2)舰载机滑行过程中,水平方向只有阻力作用,根据牛顿第二定律有
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250030154661487.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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