Masses 8, 2, 4, 2 kg are placed at the corners A, B, C, D respectively of a square ABCD of diagonal 80 cm. the distance of centre of mass from A will be

Q: Masses 8, 2, 4, 2 kg are placed at the corners A, B, C, D respectively of a square ABCD of diagonal 80 cm. the distance of centre of mass from A will be

(a) 20 cm

(b) 30 cm

(c) 40 cm

(d) 60 cm

Ans: (b)