表二
实验次数 |
滑轮材质 |
单个滑轮重G轮/N |
钩码重G码/N |
拉力F/N |
钩码被 提升的高度h/cm |
绳端移动的距离s/cm |
机械效率/η |
1 |
铝 |
1 |
2 |
1.1 |
5 |
15 |
60.6% |
2 |
铝 |
1 |
4 |
1.8 |
4 |
12 |
74.1% |
3 |
铝 |
1 |
3 |
2.1 |
6 |
12 |
74.1% |
4 |
铝 |
1 |
3 |
2.1 |
8 |
16 |
71.4% |
5 |
塑料 |
0.5 |
3 |
1.8 |
7 |
14 |
|
6 |
塑料 |
0.5 |
3 |
3.1 |
8 |
8 |
96.8% |