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Two bodies of mass 1 kg and 3 kg have position vector i + 2j + k and -3i - 2j + k , respectively.

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Two bodies of mass 1 kg and 3 kg have position vector i + 2j + k and -3i - 2j + k , respectively. The centre of mass of this system has a position vector

(a) 2i - j - 2k

(b) -2i - j + k

(c) -i + j + k

(d) -2i + 2k

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Correct option (b) -2i - j + k   

Explanation:

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