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As radius of gyration is indirectly to the parallel axis theorem, parallel axis theorem uses the ____________ of the distance.

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As radius of gyration is indirectly to the parallel axis theorem, parallel axis theorem uses the ____________ of the distance.

(a) Square root

(b) Square

(c) Cube root

(d) Cube

The question was asked in final exam.

The doubt is from Radius of Gyration of an Area topic in portion Moments of Inertia of Engineering Mechanics

1 Answer

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Correct choice is (b) Square

Easiest explanation: 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. And uses the square of the distance from the axis of rotation.

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