题目内容
如图所示装置,放在水平桌面上的物体m2通过轻质线绳和定滑轮与m1相连.已知
=2kg,
=8kg,μ=0.2,g=10m/
.系统被释放后,求:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241156482722442.jpg)
(1)系统的加速度多大?(水平桌面高2m)
(2)线绳的拉力多大?
(3)3s内物体m1的位移多大?(不计滑轮质量和滑轮摩擦)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115648178114.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115648194115.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115648209104.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241156482722442.jpg)
(1)系统的加速度多大?(水平桌面高2m)
(2)线绳的拉力多大?
(3)3s内物体m1的位移多大?(不计滑轮质量和滑轮摩擦)
(1)0.4m/s2 (2)19.2N (3)1.8m
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115648287510.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241156483031969.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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