Observation no. | Pulling force (kg) | Pulling angle (degree) | Pulling force/ Pushing force (N) | Average pushing force (N) |
1 | 7.8 | 35 | 62.68 | 63.89 |
2 | 8.4 | 35 | 67.50 | |
3 | 8.0 | 35 | 64.29 | |
4 | 7.6 | 35 | 61.07 |