加热时间/min | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
甲的水温/℃ | 25 | 27 | 29 | 31 | 33 | 35 | 37 | 39 | 41 |
乙的水温/℃ | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 |
实验次数 |
斜面的倾斜程度 |
物块重力G/N |
斜面高度h/m |
拉力F/N |
斜面长度s/m |
机械效率η |
1 |
较缓 |
5 |
0.2 |
2.4 |
1 |
41.7% |
2 |
较陡 |
5 |
0.5 |
3.2 |
1 |
78.1% |
3 |
最陡 |
5 |
0.7 |
4.3 |
1 |
81.4% |