JEE Main 2018PhysicsLaws of MotionMediumMCQ

JEE Main 2018 — Laws of Motion Question with Solution

JEE Main 2018 (08 Apr)

Question

Two masses m1=5 kg and m2=10 kg, connected by an inextensible string over a frictionless pulley, are moving as shown in the figure. The coefficient of friction of horizontal surface is 0.15. The minimum weight m that should be put on top of m2 to stop the motion is:

Choose an option

Show full solutionCorrect option: C
Correct answer
C27.3 kg

Step-by-step explanation

T=5g⇒μ10+m≥5g⇒10+m≥50.15
⇒m≥23.33 kg⇒m=27.3 kg.

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About this question

This is a previous-year question from JEE Main 2018, 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.