sir why cant i do like this as MI of disk is 1/2mr^2 so of half dik it would be 1/4mr^2 (because MI is additive) now as some portion is cut so mi should be=1/4m(R1^2-R2^2) . as i can subtract moment of inertia of cutted disk
9 years ago
by
Dheeraj Agarwal