同学 | 实验序号 | l (m) | m(g) | θ(°) | 30t(s) |
甲 | 1 | 1.0 | 30 | 4 | 60 |
2 | 1.0 | 40 | 4 | 60 | |
3 | 1.0 | 50 | 4 | 60 | |
乙 | 4 | 1.0 | 30 | 3 | 60 |
5 | 1.0 | 30 | 4 | 60 | |
6 | 1.0 | 30 | 5 | 60 | |
丙 | 7 | 0.8 | 30 | 4 | 54 |
8 | 1.0 | 40 | 4 | 60 | |
9 | 1.2 | 50 | 3 | 66 |