JEE Main 2021 — Rotational Motion Question with Solution
From: JEE Main 2021 (Online) 25th July Evening Shift
Question
A solid disc of radius 20 cm and mass 10 kg is rotating with an angular velocity of 600 rpm, about an axis normal to its circular plane and passing through its centre of mass. The retarding torque required to bring the disc at rest in 10 s is ____________ 101 Nm.
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Show full solutionCorrect answer: 4
Correct answer
4
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This is a previous-year question from JEE Main 2021, covering the Rotational Motion chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.