Question

Four particles each of
mass 1 kg are placed at
the corners of a square
OABC of side 1 m. 'O' is at
the origin of the
coordinate system. OA
and OC are aligned along
positive X-axis and
positive Y-axis
respectively. The position
vector of the centre of
mass is (in 'm')​

Answer 1

Answer:

A

i^+j^

B

21(i^+j^)

C

(i^−j^)

D

21(i^−j^)

Solution

Correct option is

B

21(i^+j^)

Xcom=4∑×i=41+1+0+0=21

Ycom=4∑Yi=40+0+1+1=1/2

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