A playground merry-go-round of radius r = 2.00 m has a moment of inertia = 250 ⋅ , and is rotating at 10.0 rev/min about a frictionless vertical axle. Facing the axle, a 20.0-kg child hops onto the merry-go-round, and manages to sit down on the edge. What is the new moment of inertia of the merry-go-round?

Explanation:

We are given that

Radius,r=2 m

Moment of inertia,I=250

Angular velocity,

Mass of child,m=20 kg

We have to find the new moment of inertia of the merry go round.

New moment of inertia ,

Using the formula

Hence, the new moment of inertia of the merry -go-round=

where’s the list ? the question is incomplete

the answer to this is proletariats.

hope this : )