Inertia and Center of Mass??

[SsUeSbIaEs]

I'm a bit confused about finding the moments of Inertia for objects, I know

I=Icm+MD^2

but what exactly is D, is it the distance from the Center of Mass to the pivot point, can someone please explain this to me??? :confused:

[Doc Al]

I'm a bit confused about finding the moments of Inertia for objects, I know

I=Icm+MD^2

but what exactly is D, is it the distance from the Center of Mass to the pivot point...
D is the distance from the center of mass to the desired axis of rotation. That equation is the parallel axis theorem. It tells you how to find the rotational inertia about any axis if you know the rotation inertia about a parallel axis going through the center of mass.