A merry-go-round spins freely when Janice moves quickly to the center along a radius of the
merry-go-round. It is true to say that
A) the moment of inertia of the system decreases and the angular speed increases.
B) the moment of inertia of the system decreases and the angular speed decreases.
C) the moment of inertia of the system decreases and the angular speed remains the same.
D) the moment of inertia of the system increases and the angular speed increases.
E) the moment of inertia of the system increases and the angular speed decreases

Option A - the moment of inertia of the system decreases and the angular speed increases.

Explanation:

The moment of Inertia of merry- go-round spins is

I =  + mr²

ζ = I

ζ  =( + mr²)

= ζ / ( + mr²)

where is the angular speed

increases when the moment of inertia decreases

Therefore, it is true to say that the moment of inertia of the system decreases and the angular speed increases.

i think the answer is a, hope this is right, that would be my best guess.

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic