A woman with mass of 57 kg stands at the rim of a horizontal table having a moment of inertia of 570 kg m2

Question

and a radius of 1.5 m.The turntable is initially at rest and is free
to rotate about a frictionless, vertical axis through its center. The woman then starts walking around the rim clockwise (as viewed
from above the system) at a constant speed of 1.9 m/s relative to the Earth.With what angular speed does the turntable rotate?
Answer in units of rad/s.

Answer 1

I omega-woman = I omega-turntable
Treat woman as point mass I = mr^2 and her omega is v/r