Two blocks of masses 10 kg and 30 kg are placed along a vertical line. The first block is raised through a height of 7 cm. By what distance should the second mass be moved to raise the centre of mass by 1 cm ?

Two blocks of masses 10 kg and 30 kg are placed along a vertical line.

1.	Two blocks of masses 10 kg and 30 kg are placed along a vertical line. The first block is raised through a height of 7 cm. By what distance should the second mass be moved to raise the centre of mass by 1 cm ?
Answer» 1 CM upward 1 cm downward 2 cm downward 2 cm upward Answer :B