Question

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

• A. 1cm up
• B. 1cm down
• C. 2 cm down
• D. 2 cm up

Answer 1

Answer: (B)

$I=\frac{(10\times 7)+(30x)}{40}$