The distance of a point where the whole area of a body is assumed to be concentrated from a given axis is
called-
-
A.
Radius of gyration
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B.
Second moment of area
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C.
Moment of inertia
-
D.
Mass moment of inertia
Correct Answer:
A. Radius of gyration
Explanation:
The radius of gyration is defined as the radial distance from a specific axis to a point where the total area of a cross-section is considered to be concentrated, resulting in the same moment of inertia as the actual distributed area. Mathematically, it is expressed as the square root of the ratio of the moment of inertia to the total area. While the moment of inertia measures an object's resistance to rotational acceleration, the radius of gyration specifically describes the distribution of that area relative to the axis of rotation.
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