Question

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

• A. $3$
• B. $2$
• C. $6$
• D. $3/2$

Answer 1

The correct option is A $3$

Specific gravity = $\frac{wt.ofbodyinair}{reductionofweightinwater}=\frac{60}{60-40}=\frac{60}{20}=3$