Moment of inertia , also called mass moment of inertia or the angular mass , -LRB- SI units kg NUMBER@1 -RRB- is a measure of an object 's resistance to changes in its rotation rate .

Moment of inertia , also called mass moment of inertiasometimes also the angular mass , -LRB- SI units kg m ² , Former MISC@1 units slug ft2 -RRB- , is the rotational analog of mass .
