打开App
360P
将物体匀速提升，现改用滑轮组提升，如何求解机械效率？
65.如图所示，小杨用9N的力将物体A匀速提升了6m；若他改用滑轮组把物体A匀速提升相同高度，动滑轮重1N
第十一章 机械与功 期末必会的典型题训练41/53
App01:25
App02:36
App03:14
App01:37
App02:18
App02:02
App02:09
App02:38
App02:04
App02:42
App02:29
App01:48
App03:51
App01:36打开App观看
![沙雅县气象台发布道路结冰黄色预警[Ⅲ级/较重]](http://p3-sign.bdxiguaimg.com/tos-cn-p-0015/os2jgCeJA9jQyDvdWVMFE3EfIEOfbn4eDADrD2~tplv-pk90l89vgd-fglass:864:486:90.jpeg?appId=32&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=101_middle_image&imageType=list&isImmersiveScene=0&is_stream=0&lk3s=9d3f5bff&logId=202501111226369E58373AF4DFB662E859&requestFrom=101&x-expires=1768105597&x-signature=2FY7k%2BAESm0%2FV2%2Fyj5mmiRp7Rfg%3D)
