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QAIPM-2015-Ph-1238: NEET 2015 Physics - Class 11 AIPM-2015-Ph-1238 Solution: A force $ {F} = {i} + 3 {j} + 6 {k}$ is acting at a point \(…

A force

\vec{F} = \alpha\hat{i} + 3\hat{j} + 6\hat{k}

is acting at a point

\vec{r} = 2\hat{i} - 6\hat{j} - 12\hat{k}

. The value of

\alpha

for which angular momentum about origin is conserved is zero 1 -1 2

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