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Four particles, each of mass 1kg, are pl...

Four particles, each of mass 1kg, are placed at the corneres of a square OABC of side 1m. .O. is at the origin of the coordinate system. OA and OC are aligned along positive x-axis and positive y-axis respectively. The position vector of the centre of mass is (in .m.)

A

`hati+hatj`

B

`(1)/(2)(hati+hatj)`

C

`hati-hatj`

D

`(1)/(2)(hati-hatj)`

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The correct Answer is:
B
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