From a complete ring of mass M and radius R, an are of making 30^(0) 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 are of making 30^(0) a

1.	From a complete ring of mass M and radius R, an are of making 30^(0) 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)` `I=(11)/(12)MR^(2)`