Q. 75.0( 1 Vote )

A wooden cube of side 10 cm has a mass of 700 g. It floats in water with :
A. half of its volume underwater

B. 3 cm above the water

C. 7 cm above the water surface

D. just inside the water surface

Answer :

The cube displaces water equal to its weight. When it immerses 7 cm, the volume of water displaced is 10x10x7 cm3 which is 700 cm3. The weight of displaced is 700 g. Thus, the cube starts floating.

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