弹簧受到的拉力F/N |
0 |
0.49 |
0.98 |
1.47 |
1.96 |
2.45 |
2.94 |
3.45 |
弹簧的长度x /cm |
2 |
3 |
4 |
5 |
6 |
7 |
7.5 |
7.5 |
弹簧的伸长量 / cm | 0 | 1 | 2 | 3 | 4 | 5 | 5.5 |
A. B. C.