かく運動 うんどう りょう保存 ほぞん法則 ほうそくであれば
kaku undōryōhozonno hōsokudeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 角運動量保存の法則

1. If the law of conservation of angular momentum holds; If the law of conservation of angular momentum were true

Ba Conditional
Physics