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Question

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

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Solution

The specific gravity of ice = 0.9.
The specific gravity of sea water = 1.02.
Let 'M' be the weight and v be the volume of an iceberg.
According to the Archimede's Principle,
M×g+200=p(water)×g×V (1)
Where p(water) is the density of water
As, V=Mp(ice)
where p(ice) is the density of ice
M+200=p(water)×Mp(ice)
Therefore,
M=200g×{p(water)p(ice)1}=20010×{1.020.91}
=20010×0.13
=153.84611500

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