JEE Main 2021 — Rotational Motion Question with Solution
From: JEE Main 2021 (Online) 31st August Evening Shift
Question
A system consists of two identical spheres each of mass 1.5 kg and radius 50 cm at the end of light rod. The distance between the centres of the two spheres is 5 m. What will be the moment of inertia of the system about an axis perpendicular to the rod passing through its midpoint?
Choose an option
Show full solutionCorrect option: C
Correct answer
C19.05 kgm2
Step-by-step explanation
M = 1.5 kg, r = 0.5 m, d = m
= 19.05 kgm2
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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.