题目内容
在轻质弹簧下端悬挂一质量为0.1kg的物体,当物体静止后,弹簧伸长了0.01m,取g=10m/s2。该弹簧的劲度系数为
A.1N/m | B.10N/m | C.100N/m | D.1000N/m |
C
当物体静止后,弹力与重力相等,则
,所以该弹簧的劲度系数为![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241236033611205.png)
故选C
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123603330642.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241236033611205.png)
故选C
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.1N/m | B.10N/m | C.100N/m | D.1000N/m |