题目内容
如图所示,倾角θ为37°的粗糙斜面被固定在水平地面上,质量为 12.5kg的物块,在沿平行于斜面向上的拉力F作用下从斜面的底端由静止开始运动,力F作用2s后撤去,物体在斜面上继续上滑1.2s后,速度减为零,已知F=200 N。求:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241308184662672.png)
小题1:物体与斜面间的动摩擦因数。
小题2:物体在斜面上能够通过的路程。(已知sin37°=0.6,cos37°=0.8,g=10 m/s2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241308184662672.png)
小题1:物体与斜面间的动摩擦因数。
小题2:物体在斜面上能够通过的路程。(已知sin37°=0.6,cos37°=0.8,g=10 m/s2)
小题1:0.5
小题2:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130818513732.png)
(1)
30.1(1分)
30.2(1分)
30.3(1分)
30.4(1分)
30.5(1分)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241308188251086.png)
30.6(1分)
30.7(1分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130818966850.png)
30.8(1分)
30.9(1分)
30.10(1分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130819106961.png)
30.11(1分)
(物体到达最高点后又返回) 30.12(1分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241308185291038.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130818544172.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241308186071007.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130818700541.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241308187471252.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241308187781764.png)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241308188251086.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241308188881402.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130818919665.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130818966850.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241308189971059.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130819028689.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130819075816.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130819106961.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130819153585.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130818513732.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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