JEE Main 2020PhysicsLaws of MotionMediumMCQ

JEE Main 2020 — Laws of Motion Question with Solution

JEE Main 2020 (06 Sep Shift 1)

Question

An insect is at the bottom of a hemispherical ditch of radius 1m. It crawls up the ditch but starts slipping after it is at height h from the bottom. If the coefficient of friction between the ground and the insect is 0.75, then his :g=10 m s-2

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Show full solutionCorrect option: A
Correct answer
A0.20 m

Step-by-step explanation

  

mgsinθ=μmgcosθ

tanθ=μ=0.75

⇒θ=37

cosθ=R-hR

cos37=1-h1⇒h=0.2

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About this question

This is a previous-year question from JEE Main 2020, 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.