A wooden block has 302015cm which floats on density 1g/cm^3. Calculate the height of block that is outside water.

Priyanka

3 years ago

A wooden block has 30*20*15cm which floats on density 1g/cm^3. Calculate the height of block that is outside water.

1 Answer

Priyanka

3 years ago

GIVEN ,

VOLUME OF WOOD vo= 30 * 20 * 15 = 9000cm³

density of wood, do = 0.8

density of water, dl = 1

volume of liquid displaced vl = ?

for floaqtation ,

vo do g = vl dl g

vl = ( vo do )/ dl

vl = 7200 cm³

This volume of wood inside water .

So, volume of wood outside water = 900 cm³-7200 cm³

= 1800 cm³

Part of wood that remains outside = 1800 / 900

= 1/ 5

Hence, 1/5 th of its height remains above the water

that is 1/5 *15

= 3 cm

therefore, 3 cm of wood remains outside the water.

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