题目内容
(一)、小华在竖直悬挂的弹簧下端加挂钩码,测量一轻弹簧的劲度系数,根据所测实验数据,在弹力F跟弹簧长度L关系的坐标系中描点如图所示.全过程未超过弹簧的弹性限度.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082414421438216152.png)
(1)请根据已描出的点作出F—L图象;
(2)由图象知弹簧的劲度系数K= N/m.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082414421438216152.png)
(1)请根据已描出的点作出F—L图象;
(2)由图象知弹簧的劲度系数K= N/m.
(1)如图(2分) (2)23~26(3分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082414421842241203.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082414421842241203.png)
(1)通过得到的数据进行描点连线,因为力与型变量成正比,所以图线必须为一条倾斜直线,尽可能让较多的点落在直线上(2)图线的斜率就表示的是劲度系数![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241442184851335.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241442184851335.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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