Question

A uniform metre scale balances at the $40cm$ mark when weights of $10g$ and $20g$ are suspended from the $10-cm$ and $20-cm$ marks respectively. The weight of the metre scale is

• A. 50 g
• B. 60 g
• C. 70 g
• D. 80 g

Answer 1

Answer: (C)

$10g\times 30+20g\times 20=W\times 10$