When I was young, my family had a fast motorboat. It had a hole in the bottom (with a plug in it!). I asked my dad about the hole, and he said if the boat was moving fast enough, you could open the plug and any water in the bottom of the boat would drain out. a) Explain how this could work b) If the bottom of the boat is 20 cm below the surface of the water, calculate the minimum speed the boat has to move to get all the water to drain out of the bottom.
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.
When I was young, my family had a fast motorboat. It had a hole in the bottom (with a plug in it!). I asked my dad about the hole, and he said if the boat was moving fast enough, you could open the plug and any water in the bottom of the boat would drain out.
a) Explain how this could work
b) If the bottom of the boat is 20 cm below the surface of the water, calculate the minimum speed the boat has to move to get all the water to drain out of the bottom.
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