[问题] 摩擦力

楼主: zxc45693 (阿彬~~)   2017-10-27 22:34:28
https://i.imgur.com/NMR6Odp.jpg
第七题答案给不会移动欸,请问是否给错啊,我怎么算都会动,求解感恩
https://i.imgur.com/n83SJOv.jpg
相机有点坏了请见谅QQ
作者: jjjj19971122 (jjjj19971122)   2017-10-27 23:05:00
1楼应该是说答案给错了

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