PhysicsNEET 2020Torque, angular momentum and their conservation

System of Particles and Rotational Motion

Find the torque about the origin when a force of $3 \hat{j}$ N acts on a particle whose position vector is $2 \hat{k}$ m.

A. $6 \hat{i}$ N·m
B. $6 \hat{j}$ N·m
C. $- 6 \hat{i}$ N·m✓
D. $6 \hat{k}$ N·m

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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From Physics › System of Particles and Rotational Motion › Torque, angular momentum and their conservation — lectures, notes and every past question on it.

Last revised 7 Sept 2026. Found a mistake? Tell us — corrections are the fastest thing we act on.

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