Gen sci Term 1 summative 2

fluid statics

fluid at rest

fluid dynamics

fluid in motion

hydrodynamics

Branch of fluid mechanics that studies liquids in motionn and the forces acting on solid objects immersed in them

hydraulics

systems that utilize pressure and movement of liquids to generate, control, and transmit power

Fluid

A substance which can flow even under the small application of force

Are both liquid and gases

the volume remains relatively constant

In a liquid, molecules can move relative to each other, BUT ______

liquid

GAS or LIQUID?

Difficult to compress; incompressible

Liquid

GAS OR LIQUID?

Occupies a fixed volume and will take the shape of container

Liquid

GAS OR LIQUID?

A free surface is formed if the volume of container is greater than this fluid

Gas

GAS OR LIQUID?

easy to compress; changes volume and are related to temperature

Gas

GAS OR LIQUID?

no fixed volume, it changes volume to expand to fill the containing vessels

Gas

GAS OR LIQUID?

Completely fill the vessel so that no free surface is formed

Mechanics

The oldest physical science dealing w static and dynamic bodies under external forces

• static - body at rest

• Mechanic - body in motion

blaise pascal

French mathematician, physicist, and philosopher that discovered the Foundation of Hydraulics

Equilibrium in fluids

“if a fluid is enclosed, pressure is divided equally”

Archimedes principle

”any object completely or partially submerged in fluid experiences an upward force equal in magnitude to the weight of the fluid displaced by the object”

density

p= m/v

How tightly matter is packed in an object

Compares an object’s mass to the amount of space it occupies

Buoyant force

upward force that fluids give to anything placed in them

If an object displaces the fluid, it pushes back with a force equal to the weight of the fluid displaced

Fb = pgV