JEE Main 2021PhysicsMotion In Two DimensionsMediumMCQ

JEE Main 2021 — Motion In Two Dimensions Question with Solution

JEE Main 2021 (26 Aug Shift 2)

Question

A particle of mass m is suspended from a ceiling through a string of length L. The particle moves in a horizontal circle of radius r such that r=L2. The speed of particle will be :

Choose an option

Show full solutionCorrect option: A
Correct answer
Arg

Step-by-step explanation

sinθ=12

θ=45°

tanθ=mv2rmg=v2rg=1

v2=rg

v=rg

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About this question

This is a previous-year question from JEE Main 2021, covering the Motion In Two Dimensions 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.