Forces in Fluids Flashcards
The amount of pressure you exert depends on what force you exert?
the area; the larger the more forces is distributed, the less pressure is exerted
pressure
an equal forces to another that is exerted on a surface divided by the total area over which the force is exerted
what is the equation for pressure?
Pressure = force divided by area
pascal
the unit for pressure, N/m^2 = 1 Pa
fluid
a material that can easily flow and change its shape
In a fluid, all of the force exerted by the individual particles combine to make up what?
the pressure exerted by the fluid
The number of a fluid’s particles are large which considers them to be what?
a whole
stationary fluid
the total force exerted by the fluid divided by the area over which the force is exerted that is also the pressure at a given point is exerted equally in all directions
How does pressure balances together?
it presses on things from every direction from the weight of the atmosphere
when does atmospheric pressure decrease?
as elevation increases
when does water pressure increase?
when depth increases
water pressure is a result of what above the water at a particular point?
water
barometer
an instrument that measures atmospheric pressure
density
a substance that is its mass per unit volume
what is the equation for density?
Density = mass divided by volume
what can you predict when comparing densities?
whether an object will float or sink in a fluid
what will happen when an object has more, less, or equal density to the fluid?
More density than the fluid →sinks
Less density that the fluid →float on the surface
Equal density to the fluid →flots at a constant depth
buoyancy
the ability to floatb
Buoyant force
an upward force that occurs when water and other fluid exert and act on a submerged object
