题目内容
某同学在探究加速度与力、质量的关系的实验中,测得小车的加速度a和拉力F的数据如下表所示
(1)根据表中的数据在坐标图3-14上作出a-F图像.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241321049436009.jpg)
图3-14
(2)实验中所得a-F图线不通过坐标原点,原因是________________________________________________________________________
_____________________________________________
___________________________.
F/N | 0.20 | 0.30 | 0.40 | 0.50 | 0.60 |
a/(m·s-2) | 0.11 | 0.19 | 0.29 | 0.40 | 0.51 |
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241321049436009.jpg)
图3-14
(2)实验中所得a-F图线不通过坐标原点,原因是________________________________________________________________________
_____________________________________________
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132105021164.png)
(1)如图所示
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241321050675081.jpg)
(2)平衡摩擦力时,木板的倾角过小或没有平衡摩擦力
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241321050675081.jpg)
(2)平衡摩擦力时,木板的倾角过小或没有平衡摩擦力
略
![](http://thumb2018.1010pic.com/images/loading.gif)
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