Three particle each of 1kg mass are placed at corners of a right angled triangle AOB, .O. being the origin of coordinate system (OA and OB along the x - direction and + ve y-direction). If OA = OB = 1m, the position vector of centre of mass (in metres) is

Three particle each of 1kg mass are placed at corners of a right angle

1.	Three particle each of 1kg mass are placed at corners of a right angled triangle AOB, .O. being the origin of coordinate system (OA and OB along the x - direction and + ve y-direction). If OA = OB = 1m, the position vector of centre of mass (in metres) is
Answer» `(hati+hatj)/(3)` `(hati-hatj)/(3)` `(2(hati+hatj))/(3)` `hati-hatj` ANSWER :A