Rigid body rotation -- A person walking around a merry-go-round

[Butterfly41398]

Homework Statement

Find the net rotation in the merry go round

Relevant Equations

I=mr^2

This one is challenging for me. Can anyone give me a hint?

 

[gneill]

At Physics Forums no help or hints can be given until you've shown your own attempt at solution, or at least detail what approaches you've tried. Homework questions without an effort shown are often simply deleted.

 

[Frigus]

Conserve $\vec {L}$.

 

[mpresic3]

In case your textbook is using a different symbol than L above. Go back to your textbook, or some other, and examine "conservation of angular momentum"