Question

There is a perpendicular axis theorem for the area, and it is can be used to determine the product of a moment of inertia.

(a) True

(b) False

I have been asked this question during a job interview.

Question is from Product of Inertia for an Area topic in section Moments of Inertia of Engineering Mechanics

Answer 1

Right answer is (b) False

The best I can explain: There is no perpendicular axis theorem for the area. In spite there is the theorem as parallel axis for any area. Thus we have the theorem which is used to add the two mutually perpendicular moment of inertias.