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A cube of side a and mass on just floats...

A cube of side a and mass on just floats on the surface of water as shown in the figure. The surface tension and density of water are `T` and `rho_(w)` respectively. If angle of contact between cube and water surface is zero, find the distance `h` (in metres) between the lower face of cube and surface of the water.
(Take `m=1kg, g=10ms^(-12), aT=10/4` unit and `rho_(w)a^(2)g=10` unit)

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