JEE Main 2024PhysicsRotational MotionHardNumerical

JEE Main 2024 — Rotational Motion Question with Solution

JEE Main 2024 (29 Jan Shift 2)

Question

A body of mass 5 kg moving with a uniform speed 32 m s-1 in X-Y plane along the line y=x+4. The angular momentum of the particle about the origin will be _______kg m2 s-1.

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Show full solutionCorrect answer: 60
Correct answer
60

Step-by-step explanation

Equation of line given: y-x-4=0.

Let d1 be the perpendicular distance of given line from origin.

d1=-412+12=22

So, |L→|=mvd1=5×32×22 kg m2 s-1

=60 kg m2 s-1

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About this question

This is a previous-year question from JEE Main 2024, 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.