From a complete ring of mass M and radius R, an arc of making 30^(@) at centre is removed. What is the moment of inertia of the incomplete ring about an axis passing through the centre of the ring and bot^(er) to the plane of the ring

From a complete ring of mass M and radius R, an arc of making 30^(@) a

1.	From a complete ring of mass M and radius R, an arc of making 30^(@) at centre is removed. What is the moment of inertia of the incomplete ring about an axis passing through the centre of the ring and bot^(er) to the plane of the ring
Answer» Solution :mass of in COMPLETE ring = `M-(M)/(2pi)xx (pi)/(16)=(11M/(12))` MOI of inertia of INCOMPLETE ring `I=[(11m)/(12)]R^(2)`