1. The problem statement, all variables and given/known data Find the moment of inertia for this composite object: M1=5kg at (3,4) and M2=3kg at (6,8) 2. Relevant equations Moment if inertia for point particle = MR2 3. The attempt at a solution I'm not sure if moment of inertia should be componentized -- broken up into x and y components. Ix =9M1 + 36M2 Iy= 16M1+64M2 Plugged in known values for m1 and m2 Now, should the components of moment if inertia now be summed (as you would if finding the total moment of inertia of say, a person sitting on a rotating disk) or I(total) = sqrt(Ix^2 + Iy^2), since they are lying in an axis?