Question

The parallel axis theorem can add any angle varied moment of inertias to give the perpendicular moment of inertia and the radius of gyration can be calculated.

(a) True

(b) False

The question was posed to me in examination.

I'm obligated to ask this question of Radius of Gyration of an Area topic in section Moments of Inertia of Engineering Mechanics

Answer 1

Right option is (b) False

The explanation is: Parallel axis for any area is used to add the two mutually perpendicular moment of inertias for areas. It gives a moment of inertia perpendicular to the surface of the body. That is the moment of inertia perpendicular to the surface in considerance.