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JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 25 June 2022, Shift 1, Physics Q34

Question 34 of 90 in this shift, Physics question 4 of 30, Section A.

If force

\vec{F}=3\hat{i}+4\hat{j}-2\hat{k}

acts on a particle having position vector

2\hat{i}+\hat{j}+2\hat{k}

then, the torque about the origin will be :

(1) $3\hat{i}+4\hat{j}-2\hat{k}$
(2) $-10\hat{i}+10\hat{j}+5\hat{k}$ Official answer
(3) $10\hat{i}+5\hat{j}-10\hat{k}$
(4) $10\hat{i}+\hat{j}-5\hat{k}$

Official answer

Option 2

NTA final key.

Chapter: System of Particles and Rotational Motion
Topic: Torque and Equilibrium
Idea tested: 3D Torque Components

Same idea in other shifts

Asked 2× in all

17 Mar 2021, Shift 1 · Q10A triangular plate is shown. A force $\vec{F}=4\hat{i}-3\hat{j}$ is applied at point P. The torque at point P with respect to point 'O'…MediumDiagram basedHas a figure

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.