3Masses 8 kg, 2 kg, 4 kg and 2 kg are pl...

3Masses 8 kg, 2 kg, 4 kg and 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

20 cm

30 cm

40 cm

60 cm

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