JEE Main 2023 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 10 April 2023, Shift 2, Physics Q53

Question 53 of 90 in this shift, Physics question 23 of 30, Section B.

A force of

-P\hat{k}

acts on the origin of the coordinate system. The torque about the point (2, -3) is

P(a\hat{i} + b\hat{j})

. The ratio of

\frac{a}{b}

\frac{x}{2}

. The value of x is -

Official answer

NTA final key.

Chapter: System of Particles and Rotational Motion
Topic: Torque and Equilibrium
Idea tested: Torque Calculation

Same idea in other shifts

Asked 7× in all

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29 Jul 2022, Shift 2 · Q46The torque of a force $5\hat{i}+3\hat{j}-7\hat{k}$ about the origin is $\tau$ . If the force acts on a particle whose position vector is…EasySingle correct
4 Aug 2021, Shift 1 · Q19The moment of force $\overline{F}=2\hat{i}+\hat{j}+2\hat{k}$ acting at a point $-\hat{i}+2\hat{j}+\hat{k}$ about the point…EasySingle correct
16 Mar 2021, Shift 2 · Q24A force $\vec{F}=4\hat{i}+3\hat{j}+4\hat{k}$ is applied on an intersection point of $x=2$ plane and $x$ -axis. The magnitude of torque of…EasyNumerical value
5 Sep 2020, Shift 1 · Q22A force $\vec{F} = (\hat{i} + 2\hat{j} + 3\hat{k})$ N acts at a point $(4\hat{i} + 3\hat{j} - \hat{k})$ m. Then the magnitude of torque…EasyNumerical value

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.