Wooden cube just floats inside a water when a 0.2 kg mass is placed on it when the mass is remove the cube is 2 centimetre about the water level what is the size of the cube
Let the side of the cube be x.
Volume of the cube, V = x3
Let mass be the mass of the wooden block.
when the mass 100 g ( = 0.1 ) is on the wooden block then,
Weight of the wooden block + 0.1g = weight of the water displaced by the wooden block
When mass 0.1 kg is removed from the wooden block,
ρ = 1000 kg/m3
on solving we get,
x = 10 cm