Question

Moment of inertia of a rod of length $ l $ about an axis passing through its edge is (mass of the rod $M$)

• A. $ \frac{Ml^{2}}{12} $
• B. $ \frac{Ml^{2}}{3} $
• C. $ \frac{Ml^{2}}{2} $
• D. $ \frac{Ml^{2}}{4} $

Answer 1

Answer: (B)

Moment of inertia of a long uniform thin rod about an axis passing through its edge and perpendicular to the rod is $ \frac{Ml^{2}}{3} $ .