https://m.dcinside.com/board/physics2/755654- dc App
https://m.dcinside.com/board/physics2/755655
https://gall.dcinside.com/mgallery/board/view/?id=physics2&no=755659그냥 기울기 일정하다고 생각하고 풀면 스무스하게 풀리긴해요
https://m.dcinside.com/board/physics2/755654
- dc App
https://m.dcinside.com/board/physics2/755655
https://gall.dcinside.com/mgallery/board/view/?id=physics2&no=755659
그냥 기울기 일정하다고 생각하고 풀면 스무스하게 풀리긴해요