Question:medium
If a force \(\vec{F}=\hat{i}-2\hat{j}-4\hat{k}\) acting on a particle displaces it from \((1,1,1)\) to \((2,-1,0)\), then the work done by the force (in units of work) is
If a force \(\vec{F}=\hat{i}-2\hat{j}-4\hat{k}\) acting on a particle displaces it from \((1,1,1)\) to \((2,-1,0)\), then the work done by the force (in units of work) is
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For work done by a constant force in 3D:
\[
W=\vec{F}\cdot \Delta \vec{r}
\]
Always compute displacement first.
Updated On: Apr 29, 2026
- \(7\)
- \(1\)
- \(5\)
- \(4\)
- \(9\)
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The Correct Option is A
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