JEE Main 2019 — Rotational Motion Question with Solution
From: JEE Main 2019 (Online) 9th April Evening Slot
Question
A thin smooth rod of length L and mass M is
rotating freely with angular speed 0 about an
axis perpendicular to the rod and passing
through its center. Two beads of mass m and
negligible size are at the center of the rod
initially. The beads are free to slide along the
rod. The angular speed of the system , when
the beads reach the opposite ends of the rod,
will be :-
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
Initial angular momentum = Final Angular
Momentum
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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.