zombiefreak
2020-10-16T05:25:37+00:00
球体放在斜面上自由滚动，同时给斜面体水平的推力，求助球体的受力分析，忽略平面与斜面之间的摩擦，球体与斜面摩擦系数f[s:ac:瞎]
[img]https://img.nga.178.com/attachments/mon_202010/21/-7Q5-dl71K18T3cSne-dn.jpg.medium.jpg[/img]
[img]https://img.nga.178.com/attachments/mon_202010/21/-7Q5-dl71K18T3cSne-dn.jpg.medium.jpg[/img]