我知本人廢 唔應該問D咁廢既問題比咁多位膠登仔
但原諒我吧!咁多位肯大發慈悲樂於助人既膠登仔

It is talking about flywheel

State the relationship between m, r and h between I and describe how these parameter affect the value I.

m: the falling mass
r: radius of flywheel
h: Height of falling mass from the ground