Four particles, each of mass 1kg, are placed at the corneres of a square OABC of side 1m. .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.)

Four particles, each of mass 1kg, are placed at the corneres of a squa

1.	Four particles, each of mass 1kg, are placed at the corneres of a square OABC of side 1m. .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» `HAT(i)+hat(j)` `(1)/(2)(hat(i)+hat(j))` `(hat(i)-hat(j))` `(1)/(2)(hat(i)-hat(j))` Answer :B