Two boys of the some weight sit at the opposite ends of a diameter

cbse
rotational-motion

#1

Two boys of the some weight sit at the opposite ends of a diameter of a rotating circular table. What happens to the speed of rotation if they move nearer to the axis of rotation?


#2

The moment of inertia of the system (circular table + two boys) decreases. To conserve angular momentum (L = Iω= constant), the speed of rotation of the circular table increases.