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Two bodies of mass 2 kg and 5 kg have po...

Two bodies of mass 2 kg and 5 kg have position (1 m, 2 m, 1 m) and (3 m, 2 m, -1 m) respectively. The position vector of centre of mass is

A

`(frac{17}{7}hati + 2hatj - frac{3}{7}hatk)m`

B

`(17hati + 14hatj - 3hatk)m`

C

`(2hati + frac{17}{7}hatj - frac{3}{7}hatk)m`

D

`(14hati + 17hatj - 3hatk)m`

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The correct Answer is:
b
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