斜面倾斜角θ | 12° | 30° | 45° |
小车重G/牛 | 5 | 5 | 5 |
斜面高h/米 | 0.2 | 0.5 | 0.7 |
斜面长s/米 | 1 | 1 | 1 |
拉力F/牛 | 2.1 | 3.6 | 4.3 |
有用功W有/焦 | 1.0 | 2.5 | 3.5 |
总功W总/焦 | 2.1 | 3.6 | 4.3 |
机械效率η | 47.6% | 69.4% | 81.4% |