JEE Main 2021PhysicsWork Power EnergyMediumNumerical

JEE Main 2021 — Work Power Energy Question with Solution

JEE Main 2021 (18 Mar Shift 1)

Question

As shown in the figure, a particle of mass 10 kg is placed at a point A. When the particle is slightly displaced to its right, it starts moving and reaches the point B. The speed of the particle at B is x m s-1. (Take g=10 m s-2 The value of x to the nearest integer is

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Show full solutionCorrect answer: 10
Correct answer
10

Step-by-step explanation

Using work-energy theorem, Wg=ΔK.E.
(10)(g)(5)=12(10)v2-0
v=10 m s-1.

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About this question

This is a previous-year question from JEE Main 2021, covering the Work Power Energy 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.