How do we measure the moment of inertia when a portion of a geometrical figure has been removed? For instance if we take a disc and remove a sector of 60o from it, what will be its new Moment of inertia?

Question

anonymous · Answer

anonymous · Answer

Calculate the moment of inertia for the disk and separately for the wedge, then subtract. many similar problems can be solved this way, such as gravitation and spheres with spherical cavities.

lastdaywork · Answer

I thought the question is related with pac-man :D

anonymous · Answer

Thanks for medals, folks. This is a tricky question.