Question
Sat January 05, 2013

# The density of ice is 918kgm-3 and that of sea water id 1,030kgm-3.An iceberg floats with a portion 224 litres outside water. Find the volume of iceberg.

Sat January 05, 2013

Given: volume of the iceberg outside the water = 224 litres or 224Ã—10-3 m3

density of ice = 918 kgm-3 and that of sea water = 1030 kgm-3

Lets assume iceberg is floating with volume inside the water = x m3

The weight of the iceberg will be balanced by the buoyancy force FB

ie Mg = V?g

M = V? -----------------------(1)

Where M be the mass of the iceberg, V be the volume of the iceberg inside the water ie x m3 which is volume of the water displaced precisely and ? is the density of the water

Now M = Net Volume of the iceberg Ã— Density = (224Ã—10-3 + x) Ã— 918 kg

Substitute the values and get the desired answer!

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# You have a bag of cotton and an iron bar, each indicating a mass of 100 kg when measured on a weighing machine. In reality, one is heavier than other. Can you say which one is heavier and why?IN SOME BOOKS THE ANSWER IS THAT COTTON BAG IS HEAVIER AND IN OTHERS IT IS SAID THAT IRON BAR IS HEAVIER.PLEASE TELL ME WHICH ONE IS CORRECT.

Thu December 27, 2012