Quantitative measure of the rotational inertia of a body. As a rotating body spins about an external or internal axis (either fixed or unfixed), it opposes any change in the body's speed of rotation that may be caused by a torque. It is defined as the sum of the products obtained by multiplying the mass of each particle of matter in a given body by the square of its distance from the axis of rotation
Eylemsizlik ya da atalet momenti, korunumlu bir kuvvettir. Belli bir hızı bulunan bir parçacık yaptığı dönme hareketi sonucunda ilk eylemsizlik momenti son eylemsizlik momentine eşittir. Eylemsizlik momenti vektörel bir kuvvettir