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Fluids
Calculations
Pneumatics
Properties of Fluids
Laws of Fluids
100
The upward force exerted on an object immersed in a fluid.
What is buoyancy
100

How much work is done if you use 50N to push a box 2m?

W = F x d

    = 50N x 2m

    = 100 J

100
a key component in a pneumatic system and is used to pressurize air for transport through the system
What is compressor
100
The property of a fluid that can be found by dividing its mass by its volume.
What is density
100

The study of fluids goes back to what country

What is Greece?

200
If the object has a greater density that the fluid it is, it will:
What is sink
200

Your teacher has a mass of 77kg, how much is that in newtons?

1kg = 10N

77kg x 10 

= 770N

200
stainless steel or rubber connecting lines that connect system components and are used for fluid transfer
What are tubes/hoses
200
The rate of movement of fluid mass through a unit area.
What is mass flow rate?
200

the pressure in a stream of fluid is reduced as the speed of flow is increased.

What is Bernoulli's Principle

300
PSI is
What is pounds per square inch
300

Shoe A is a high heel with an area of 5cm2

Show B is a croc with an area of 40 cm2

If a person that weighs 800N wore both shoes, which would he exert more pressure in?

Shoe A = 800N/5cm2 = 160 N/cm2

Shoe B = 800N/40cm2 = 20 N/cm2

Shoe A is more pressure

300
A socket wrench power tool designed to deliver high torque output with minimal exertion by the user
What is an impact wrench/air wrench
300
The measure of the volume of liquid that moves in a certain amount of time.
What is volume flow rate
300
This principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces and acts in the upward direction at the centre of mass of the displaced fluid.
What is Archimedes Principle
400
The total pressure measured above zero pressure (a perfect vaccuum)
What is absolute pressure
400

How much pressure would a box put on a table if the box was 1000N and 2m2?

P = F/A

P = 1000N/2m2

P = 500N/m2 or 500 Pa

400
The difference between the atmospheric pressure and the absolute pressure.
What is vacuum pressure
400
The resistance of a fluid to flow
What is viscosity
400
The law that states that a pressure change occurring anywhere in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere.
What is Pascal's Law
500
If there is no pressure difference in a fluid system there is:
What is no movement
500

A teacher lifts a student using a combination of fixed and movable pulleys. The student weighs 800N and there are a total of 4 strings coming from the movable pulleys, what is the MA and how much effort is needed?

F = 800N/4

F = 200N

MA = 4

500
a type of tool used to drive nails into wood or some other kind of material. It is usually driven by compressed air (pneumatic),
What is a nail gun
500
weight per unit volume.
What is specific weight
500
the force required to move a sphere through a given viscous fluid at a low uniform velocity is directly proportional to the velocity and radius of the sphere.
What is Stoke's Law