천장에 연결된 줄이 끊긴 직후 위쪽 물체의 가속도는?

1. $0$

2. $g/2$

3. $g$

4. $\sqrt{2}g$

5. $2g$

https://www.youtube.com/watch?annotation_id=annotation_314765&feature=iv&src_vid=eCMmmEEyOO0&v=uiyMuHuCFo4

728x90
Posted by helloktk
,