Levers: Simple Machines for Lifting Heavy Objects
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Levers
Simple Machines
Levers are used to help lift heavy objects
What is a lever?
Lever:
a simple machine that is used to
change the direction of
force
needed to
move an object over a
fulcrum
(pivot point)
The different kinds of levers depend on
where the
fulcrum
is located
They work by using a strong
beam
that
pivots at a point called the
fulcrum
fulcrum
beam
The
beam
spreads the weight of the object across a
longer distance
The
fulcrum
is where the beam pivots, creating
leverage
, making it easier to lift objects on other side
fulcrum
beam
force
load
What are some examples of
levers
you might
see in your daily lives?
What are some examples of
levers
you might
see in your daily lives?
Levers are used when objects are too
heavy
to pick up by hand
Using a
lever
allows you to change the
direction you apply
force
to move an
object over a pivot point
Instead of trying to lift an object from the
side, a lever will allow you to lift it across
a
beam
This allows you to lift the object up with
more strength because you can get all of
your weight behind it!
The
longer
the beam,
the greater the
mechanical
advantage!
Types of Levers
First Class Lever:
the
fulcrum
is located in
between the
effort
and
load
Second Class Lever:
the
load
is located in
between the
effort
and
fulcrum
Third Class Lever:
the
effort
is located in
between the
fulcrum
and
load
Types of Lever:
First Class
example
Types of Lever:
Second Class
example
Types of Lever:
Third Class
example
Let’s try it!
Use different types of levers to lift
different weights!
Write down your observations
Levers are essential simple machines that help in lifting heavy objects by changing the direction of force needed to move an object over a fulcrum. These tools work by using a strong beam that pivots at a point called the fulcrum, spreading the weight of the object across a longer distance. There are different types of levers depending on the location of the fulcrum, such as First Class, Second Class, and Third Class Levers. Examples of levers in daily life include using them when objects are too heavy to lift by hand. By utilizing a lever, you can lift objects with more strength and mechanical advantage.
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Presentation Transcript
Levers Simple Machines
What is a lever? Click h`ere to load video on YouTube Click here to load video on mocomi.com
What is a lever? Lever: a simple machine that is used to change the direction of force needed to move an object over a fulcrum (pivot point) The different kinds of levers depend on where the fulcrum is located
They work by using a strong beam that pivots at a point called the fulcrum beam fulcrum
The beam spreads the weight of the object across a longer distance The fulcrum is where the beam pivots, creating leverage, making it easier to lift objects on other side load force beam fulcrum
What are some examples of levers you might see in your daily lives?
What are some examples of levers you might see in your daily lives?
Levers are used when objects are too heavy to pick up by hand Using a lever allows you to change the direction you apply force to move an object over a pivot point
Instead of trying to lift an object from the side, a lever will allow you to lift it across a beam This allows you to lift the object up with more strength because you can get all of your weight behind it! The longer the beam, the greater the mechanical advantage!
Types of Levers First Class Lever: the fulcrum is located in between the effort and load Second Class Lever: the load is located in between the effort and fulcrum Third Class Lever: the effort is located in between the fulcrum and load
Types of Lever: First Class example
Types of Lever: Second Class example
Types of Lever: Third Class example
Lets try it! Use different types of levers to lift different weights! Write down your observations
