Question

A certain block weighs 22 N in air. It weighs 17 N when immersed in water. When immersed in another liquid it weighs 18 N. Find the volume of the block.

• A. $500c{m}^3$
• B. $400c{m}^3$
• C. $300c{m}^3$
• D. $200c{m}^3$

Answer 1

The correct option is A $500c{m}^3$

Volume of the block $=\frac{Thrust}{d_w\times g}$

$=\frac{W_{air}-W_{water}}{{10}^3\times 10}=\frac{5N}{{10}^3\times 10}$

$=5\times {10}^{-4}{m}^3$ or $500c{m}^3$.