JEE Main 2020 — Rotational Motion Question with Solution
From: JEE Main 2020 (Online) 6th September Morning Slot
Question
Four point masses, each of mass m, are fixed at the corners of a square of side . The square is
rotating with angular frequency , about an axis passing through one of the corners of the square
and parallel to its diagonal, as shown in the figure. The angular momentum of the square about this
axis is :
This question includes a diagram. The text above accompanies the figure.
Choose an option
Show full solutionCorrect option: A
Correct answer
A3m2
Step-by-step explanation
I =
=
L = I =
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This is a previous-year question from JEE Main 2020, 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.