Two bodies of mass 1 {kg} and 3 {kg} have position vectors \stackrel{\^}{i }+2 \stackrel{\^}{ j }+ \stackrel{\^}{k} and -3 \stackrel{\^}{\i}-2 \stackrel{\^}{\j }+ \stackrel{\^}{k}, respectively. The centre of mass of this system has a position vector :-

Correct Answer is : −^2i− ^j+ ^k

\- \stackrel{\^}{i }+ \stackrel{\^}{ j }+ \stackrel{\^}{k}

-\stackrel{\^}{2i } + 2\stackrel{\^}{k}

-\stackrel{\^}{2i }- \stackrel{\^}{ j }+ \stackrel{\^}{k}

\stackrel{\^}{2i }- \stackrel{\^}{ j }-2 \stackrel{\^}{k}

NEET 2021 Model Test Paper 4

Question : 5 of 180

Marks: +1, -0

Two bodies of mass 1 kg and 3 kg have position vectors

and −3

−2

, respectively. The centre of mass of this system has a position vector :-

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