直径为d的圆截面钢杆受轴向拉力作用，已知其纵向线应变为，弹性模量为E，给出杆轴力的四种答案，问哪一种是正确的？http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/767e7380667c4d688dc6c10aaf9ef9ca.png
举一反三
- 直径为d的圆截面钢杆受轴向拉力作用，已知其纵向线应变为<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/767e7380667c4d688dc6c10aaf9ef9ca.png" />，弹性模量为E，给出杆轴力的四种答案，问哪一种是正确的？ A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/8f37f5bc2dc94791b84f000092e493b3.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/073a4958352c4951b6171383bc4ca238.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/85f164582f934227b4bbb5ee0a7267dc.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/95e66fa0756f4ffd8c0ae368c0c88564.png" />
- 直径为d的圃截面钢杆受轴向拉力作用，已知其纵向线应变为ε，弹性模量为E，给出杆轴力的四种答案，正确的是（）。 A: A B: B C: C D: D
- 直径为 d 的圆截面钢杆受轴向拉力作用，已知其纵向线应变为 ，弹性模量为 E ，...8dc6c10aaf9ef9ca.png
- 直径为d的圆截面钢材受轴向拉力作用，已知其中纵向线应变为ε，弹性模量为E，则杆的轴力为
- 直径为d的圆截面钢杆受轴向拉力作用，已知其纵向线应变为[img=9x14]1803d616bd62d5f.png[/img]，弹性模量为E，给出杆轴力的四种答案，问哪一种是正确的？ A: [img=35x46]1803d616c53f518.png[/img] B: [img=40x46]1803d616cd76bf2.png[/img] C: [img=31x44]1803d616d6f6083.png[/img] D: [img=49x46]1803d616deba3bf.png[/img]