JEE Main 2021PhysicsLaws of MotionMediumMCQ

JEE Main 2021Laws of Motion Question with Solution

JEE Main 2021 (16 Mar Shift 1)

Question

A block of mass m slides along a floor while a force of magnitude F is applied to it at an angle θ as shown in figure. The coefficient of kinetic friction is μK. Then, the block's acceleration a is given by : (g is acceleration due to gravity)

Choose an option

Show full solutionCorrect option: B
Correct answer
BFmcosθ-μKg-Fmsinθ

Step-by-step explanation

N=mg-fsinθ

Fcosθ-μkN=ma

Fcosθ-μkmg-Fsinθ=ma

a=Fmcosθ-μKg-Fmsinθ

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About this question

This is a previous-year question from JEE Main 2021, covering the Laws of 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.