The moment of inertia of a triangular section of base „b? and height „h? about an axis passing through its base is ……. times the moment of inertia about an axis passing through its C.G. and parallel to the base
A)9
B)4
C)2
D)3

Question

Quizplus · Accepted Answer

The moment of inertia of a triangular section about an axis passing through its base is 3 times the moment of inertia about an axis passing through its center of gravity (C.G.) and parallel to the base. This is because the parallel axis theorem relates these two moments of inertia, and for a triangular section, the distance between these two axes is $ \frac{h}{3} $, leading to the factor of 3 when applying the theorem.

The Moment of Inertia of a Triangular Section of Base