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Rotational Motion

JEE Main 2025 (Online) 23rd January Evening Shift

MCQ+4 / -12025

A circular disk of radius R meter and mass M kg is rotating around the axis perpendicular to the disk. An external torque is applied to the disk such that $\theta(t)=5 t^2-8 t$, where $\theta(t)$ is the angular position of the rotating disc as a function of time $t$.
How much power is delivered by the applied torque, when $t=2 \mathrm{~s}$ ?

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