Consider two rods that have the same mass and length but their masses are distri

Question

Consider two rods that have the same mass and length but their masses are distributed differently. One rod is black and the other is blue. The black rod has most of its mass concentrated at the far ends of the rod, and the blue rod has most of its mass concentrated towards the center. Which rod will have the greater moment of inertia about an axis through its geometric center?


A) Neither; both rods have the same moment of inertia.
B) The black rod has a greater moment of inertia.
C) The blue rod has a greater moment of inertia.

Explanation / Answer

the black rod will have more moment of inertia since it's mass is located far away from it's center.

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