The position vectors of three particles ...

The position vectors of three particles of mass `m_(1) = 1kg, m_(2) = 2kg and m_(3) = 3kg` are `r_(1) = ((hat(i) + 4hat(j) +hat(k))`m, `r_(2) = ((hat(i)+(hat(j)+hat(k))`m and `r_(3) = (2hat(i) - (hat(j) -(hat(2k))`m, respectively. Find the position vector of their center of mass.

A

`1.5hati+0.5hatj-0.5hatk`

B

`2.5hati+hatj-hatk`

C

`2.0hati +hatj -hatk`

D

`3.5hati+hatj-hatk`

Text Solution

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The correct Answer is:

A

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