A metal ring of radius 20 cm is rotating about a transverse axis passing through its centre. What will be its radius of gyration about the same axis?

Q.2 (vii) A metal ring of radius 20 cm is rotating about a transverse axis passing through its centre. What will be its radius of gyration about the same axis?

Doubtly Asked 28 Oct 2026 Board exam · July 2025 hsc 12th Save WhatsApp Report

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Answer: 20 cm.

For a ring about its transverse central axis \(I = MR^2 = MK^2\), so \(K = R = 20\) cm.

Doubtly AI · 28 Oct 2026 AI-generated · not yet verified Report

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A metal ring of radius 20 cm is rotating about a transverse axis passing through its centre. What will be its radius of gyration about the same axis?

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