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MACHINES (LEVERS (PARTS (FULCRUM (Point where the BAR rests), BAR (Longer…
MACHINES
LEVERS
Used to move objects that weight a lot
Transmit and Increase the force we apply
PARTS
FULCRUM
Point where the BAR rests
BAR
Longer distance between load and fulcrum less force to apply
FORCE/EFFORT
Applied to move the load
LOAD
Weight to be moved
TYPES
Class 2 Lever
LOAD between the FULCRUM and the FORCE
Class 3 Lever
FORCE between the FULCRUM and the LOAD
Class 1 Lever
FULCRUM between the LOAD and the FORCE
Definition
Devices made of different materials
Help us to complete tasks with less effort
Make our lives easier
SIMPLE MACHINES
Pulley
Made up of a wheel with a groove through a rope
Inclined plane
Less effort reiquired to raise a load when using a inclined plane with a smaller gradient
Group of pulleys
They are two pulleys or more
Classification depending on the type of energy
Electrical Machines
Electrical Energy
Thermal Machines
Burning Fuel
Manual Machines
Our energy
Classification based on the number of parts
Simple machines
One or very few parts (wheel)
Complex machines
Many parts (bycicle)
STRUCTURES
Group of connected elements capable of supporting weight
Parts
Girders
Pillars
Load
Past and present inventions
The machines of Archimedes
The screw of Archimedes
Parts
Crank
Cylinder
Screw
To raise water to irrigation channels
The claw of Archimedes
Parts
2 pulleys
Beam
Ropes
Hook
To defend his native city from roman attack
Other inventions
TRANSPORT
Aeroplanes
Spaceships
Cars
Trains
COMMUNICATIONS
Computer
Internet
Mobile Phone
MEDICINE
Scanner
X-Ray Machine
