YOU SAID:

what is going on? why do i have to find the equilibrium?

INTO JAPANESE

何が起こっているのか？なぜ平衡点を見つけなければならないのですか？

BACK INTO ENGLISH

what is happening? Why do we have to find an equilibrium point?

INTO JAPANESE

何が起こっている？なぜ平衡点を見つける必要があるのでしょうか?

BACK INTO ENGLISH

what's happening? Why do we need to find an equilibrium point?

INTO JAPANESE

何が起こっていますか？なぜ平衡点を見つける必要があるのでしょうか?

BACK INTO ENGLISH

what's happening? Why do we need to find an equilibrium point?