思思在测量滑轮组机械效率的实验时，利用如图所示的滑轮组进行了多次测量，测得数据如下表所示。                                                                                                                                                                                                                                                                                            

序号	物重G/N	钩码上升高度h/m	动力F/N	动力作用点移动距离s/m	机械效率η
1	1	0.1	0.7	0.3	47.6%
2	1	0.2	0.7	0.6	47.6%
3	2	0.1	1.1	0.3	60.6%
4	4	0.1	2	0.3