JEE Main 2020 — Rotational Motion Question with Solution
JEE Main 2020 (09 Jan Shift 1)
Question
Three solid spheres each of mass and diameter are stuck together such that the lines connecting the centres form an equilateral triangle of side of length . The ratio of moment of inertia of the system about an axis passing the centroid and about center of any of the spheres and perpendicular to the plane of the triangle is:
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
M.I about O
M.I about A
Now ratio
M.I about A
Now ratio
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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.