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Three particles of the same mass lie in ...

Three particles of the same mass lie in the x-y plane. The (x, y) coordinates of their positions are (1, 1), (2, 2) and (3, 3) respectively. The (x, y) co-ordinates of the centre of mass are:

A

(1, 2)

B

(2, 2)

C

(4, 2)

D

(6, 6)

Text Solution

Verified by Experts

The correct Answer is:
B
The x component of centre of mass is
`x=(mxx1+mxx2+mxx3)/(m+m+m)=(1)/(3)(1+2+3)=2`
Similarly,
`y=(mxx1+mxx2+mxx3)/(3m)=(1)/(3)(1+2+3)=2`
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