JEE Main 2014 — Rotational Motion Question with Solution
From: JEE Main 2014 (Offline)
Question
A mass is supported by a massless string wound around a uniform hollow cylinder of mass and radius If the string does not slip on the cylinder, with what acceleration will the mass fall or release?
This question includes a diagram. The text above accompanies the figure.
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Here string is not slipping over pulley.
From figure,
Acceleration
Applying Newton's second law on the block we get,
Torque on cylinder due to tension in string about the fixed point,
[ as = MR2 for hollow cylinder]
or
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This is a previous-year question from JEE Main 2014, 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.