Fluids Flashcards
What is Archimedes’ principle?
The weight of the water displaced by the object is equal to the buoyant force acting on the object.
What happens if the buoyant force is greater than the force of gravity?
The object will float.
What happens if the buoyant force is less than the force of gravity?
The object will sink.
What happens if the buoyant force is equal to the force of gravity.
It will maintain the same depth.
What is something you can do to dive deeper below the surface of water?
Add more mass to increase the gravitational force, making it greater than the buoyant force.
What is Pascal’s Law?
When pressure is increased in a closed system, pressure will be distributed equally inside that system.
How does pressure initially exerted by the mechanic lift up a car?
The transmission of pressure happens because the hydraulic lift is a closed system, meaning that the pressure applied will be transmitted uniformly in all directions without being lost.
Slowing moving air= _____ __________
High Pressure
Fast moving air= _____ ____________
Low Pressure
What is Bernoulli’s principle?
As the speed of a fluid (air or liquid) increases, its pressure decreases.
What is the formula for Pascal’s Law?
P= F/A
Bernoulli’s principle is the principle that allows what?
Wings to lift and planes/helicopters to fly.
On a wing, where is low pressure applied and where is high pressure applied?
At the top, there’s a faster airflow, therefore low pressure is applied downwards.
While in the contrary, there’s a slower airflow at the bottom, therefore high pressure is applied upwards.
