simple machines - travellin€¦ · simple machines chapter 8 –section 3. essential questions ......
TRANSCRIPT
![Page 1: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/1.jpg)
Simple Machines
Chapter 8 – Section 3
![Page 2: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/2.jpg)
Essential Questions
What are the six types of simple
machines?
Name an example of each.
What mechanical advantage is provided
by each simple machine?
What simple machines make up a
compound machine?
![Page 3: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/3.jpg)
What is a Simple Machine?
A simple
machine has
few or no
moving parts
Simple
machines make
work easier
![Page 4: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/4.jpg)
Levers-First Class
In a first class
lever the
fulcrum is in the
middle and the
load and effort
is on either side
Think of a see-
saw
![Page 5: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/5.jpg)
Levers-Second Class
In a second
class lever the
fulcrum is at the
end, with the
load in the
middle
Think of a
wheelbarrow
![Page 6: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/6.jpg)
Levers-Third Class
In a third class
lever the
fulcrum is again
at the end, but
the effort is in
the middle
Think of a pair
of tweezers
![Page 7: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/7.jpg)
Pulleys
Pulleys are
wheels and axles
with a groove
around the
outside
A pulley needs a
rope, chain or belt
around the
groove to make it
do work
![Page 8: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/8.jpg)
Types of pulleys
Fixed pulley – attached to something
that does not move; pull down on the
rope to make the load lift up
Moveable pulleys – not attached to the
object being moved; do not change a
forces direction, but increase force and
distance
Block and tackle – a fixed pulley and a
moveable pulley that work together
![Page 9: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/9.jpg)
Wheels and Axles
The wheel and axle
are a simple
machine
The axle is a rod
that goes through
the wheel which
allows the wheel to
turn
Gears are a form of
wheels and axles
![Page 10: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/10.jpg)
Inclined Planes
An inclined plane
is a flat surface
that is higher on
one end
Inclined planes
make the work of
moving things
easier
![Page 11: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/11.jpg)
Wedges
Two inclined planes joined back to back.
Wedges are used to split things.
![Page 12: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/12.jpg)
Screws
A screw is an inclined plane wrapped around a shaft or cylinder.
The inclined plane allows the screw to move itself when rotated.
![Page 13: Simple Machines - Travellin€¦ · Simple Machines Chapter 8 –Section 3. Essential Questions ... A pulley needs a rope, chain or belt around the groove to make it do work. Types](https://reader030.vdocuments.net/reader030/viewer/2022041011/5ebd2f1c7ce08f6f522fe0f2/html5/thumbnails/13.jpg)
Simple MachinesSimple Machines
can be put
together in
different ways to
make compound
machines
Ex: a can opener
is a wedge, a
wheel and axle,
and a second class level