JEE Main 2019 — Rotational Motion Question with Solution
From: JEE Main 2019 (Online) 9th April Evening Slot
Question
Moment of inertia of a body about a given axis
is 1.5 kg m2. Initially the body is at rest. In order
to produce a rotational kinetic energy of
1200 J, the angular accleration of 20 rad/s2
must be applied about the axis for a
duration of :-
Choose an option
Show full solutionCorrect option: D
Correct answer
D2 s
Step-by-step explanation
KE = (given)
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This is a previous-year question from JEE Main 2019, 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.