viewimage.php?id=3db5c935ecd12bf4&no=24b0d769e1d32ca73ded82fa11d028314e80f1a897f13dffcb4824f131b1dbea56a00dce9e7d546eaa7d4f5dd349bcde1fde5bac49ce878fb1f51d3f69bfa7f8516c859153a48227e68bb11a4af911ca0a

A가 B에 작용하는 힘이 왜 18N이야??
12N아님?

- dc official App