What is the rotational inertia (moment of inertia) of a 12-kg uniform rod, 0.30 m long, rotating about an axis perpendicular to the rod and passing through the center of the rod? A)0.27 kg∙m² B)0.18 kg∙m² C)0.090 kg∙m² D)0.54 kg∙m² E)0.36 kg∙m²

Question

Quizplus · Accepted Answer

The moment of inertia for a rod rotating about an axis through its center is given by (1/12)ML². Substituting M = 12 kg and L = 0.30 m, we get (1/12)(12)(0.30)² = 0.090 kg∙m².

What Is the Rotational Inertia (Moment of Inertia) of a 12-Kg