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Questions  

A particle of mass 2kg, located at position i^+j^ units has velocity 2i^-j^-2k^  units. Its angular momentum about origin is 

a
Zero
b
8 k^
c
12 k^
d
4-2i^+2j^-2k^

detailed solution

Correct option is D

L0→=r→ x mv→=i^+j^ x 2 x 2i^-j^-2k^ units⇒L0→=4i^j^k^1101-1-2=4-2i^+2j^-2k^ units.

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