Question

The reading of a spring balance when a block is suspended from it in the air is 60N. This reading is changed to 40N when the block is submerged in water. The specific gravity of the block must be, therefore:

• A. 3
• B. 2
• C. 6
• D. $\frac{3}{2}$

Answer 1

The correct option is D. $\frac{3}{2}$

We know that,

Specific gravity = $\frac{weightinair}{weightinwater}$

= $\frac{60}{40}$

= $\frac{3}{2}$