A cube of wood whose edge is 12 mm is floating in a liquid in a glass with one of its faces parallel to the liquid surface. The density of wood is 791 kg/m3 , that of liquid is 1296 kg/m3 How far hℓ below the liquid surface is the bottom face of the cube? Answer in units of mm b.)A light oil is gently poured onto the immiscible liquid surface to form a 2.7 mm thick layer above the liquid. The density of the oil is 606 kg/m3 When the wood cube attains hydrostatic equilibrium again, what will be the distance from the top of the liquid to the bottom face of the cube? Answer in units of mm
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
A cube of wood whose edge is 12 mm is
floating in a liquid in a glass with one of
its faces parallel to the liquid surface. The density of wood is 791 kg/m3
, that of liquid is
1296 kg/m3
How far hℓ below the liquid surface is the
bottom face of the cube?
Answer in units of mm
b.)A light oil is gently poured onto the immiscible liquid surface to form a 2.7 mm thick
layer above the liquid. The density of the oil
is 606 kg/m3
When the wood cube attains hydrostatic
equilibrium again, what will be the distance
from the top of the liquid to the bottom face
of the cube?
Answer in units of mm
c.)Additional light oil is poured onto the liquid
surface until the top surface of the oil coincides with the top surface of the wood cube
(in hydrostatic equilibrium).
How thick is the whole layer of the light oil?
Answer in units of mm.
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