Question

When a polar bear jumps on to an ice-berg, its weight $200kg-wt$. is just sufficient to sink the iceberg. Then the weight of iceberg is ( specific gravity of ice $=0.9$; specific gravity of sea water $=1.02$):

• A. $\text{1500 kg-wt}$
• B. $\text{1000 kg-wt}$
• C. $\text{3000 kg-wt}$
• D. $\text{2040 kg-wt}$

Answer 1

The correct option is A $\text{1500 kg-wt}$

Now,
Equating the net upward force and net downward force,
$200+W=\frac{W}{900}\times 1020$
$200+W=1.1333W$
$\frac{200}{0.1333}=W$
$\Rightarrow W=1500kgwt$