2. A 3.45 kg piece of wood (with specific gravity of 0.50) floats on water. What minimum. mass of lead, hung from the wood by a string of negligible mass and volume, will cause it to sink? (Hint For the combination to just barely sink, the total weight of the wood and lead must be equal to the total buoyant force on the wood and lead).
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.
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