JEE Main 2020 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 3 September 2020, Shift 2, Physics Q21

Question 21 of 75 in this shift, Physics question 21 of 25.

A block starts moving up an inclined plane of inclination

30^\circ

with an initial velocity of

v_0

. It comes back to its initial position with velocity

\frac{v_0}{2}

. The value of the coefficient of kinetic friction between the block and the inclined plane is close to

\frac{I}{1000}

, The nearest integer to I is ________.

Official answer

346.00

NTA final key (Sep 2020).

Chapter: Laws of Motion
Topic: Work and Kinetic Energy
Idea tested: Work on a Rough Incline Round Trip

Same topic in other shifts

All Work and Kinetic Energy questions

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.