STANDARD Physics Radius of Gyration MCQ Question
The radius of gyration of a uniform rod of length l about an axis passing through one of its ends and perpendicular to its length is
l/√2
l/3
l
l/2
Correct Answer
Detailed Explanation
The moment of inertia of a rod of mass M and length l about its axis passing through one of its ends and perpendicular to it is I = 1/3 Ml². As I = MK² where K is the radius of gyration, solving gives K = l/√2.
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