40. A force F = αî + ĵ + 3k̂ is acting at a point r = 2î - 6... — Physics | Mockzy

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40. A force F = αî + ĵ + 3k̂ is acting at a point r = 2î - 6ĵ - 12k̂. The value of α for which angular momentum about origin is conserved is:

zero

-1

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