NVAEasyJEE Main 2025 · 8 April, Shift 2Moment of Inertia & Radius of Gyration

Physics Question from JEE Main 2025 · 8 April, Shift 2

A thin solid disk of 1kg1 \, \text{kg} is rotating along its diameter axis at the speed of 1800rpm1800 \, \text{rpm}. By applying an external torque of 25πNm25\pi \, \text{Nm} for 40s40 \, \text{s}, the speed increases to 2100rpm2100 \, \text{rpm}. The diameter of the disk is _____ m\text{m}.

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