Question

关于定滑轮的一道基础大学物理题,

Answer 1

http://met.fzu.edu.cn/cai/wsjy/chenmeifeng/the%20Mechanical%20Universe/e%20%20angular%20momentum/2%20%20%E5%AE%9A%E8%BD%B4%E8%BD%AC%E5%8A%A8%E7%9A%84%E5%8A%9F%E8%83%BD%E5%8E%9F%E7%90%86.ppt#271,13,幻灯片 13