Answer:r'=0.327 m
Explanation:
Given

angular velocity

mass of objects

distance of objects from stool

Combined moment of inertia of stool and student

Now student pull off his hands so as to increase its speed to 3.60 rev/s


Initial moment of inertia of two masses


After Pulling off hands so that r' is the distance of masses from stool

Conserving angular momentum







