Learn How Pulleys Make Lifting Easier

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Pulleys
Simple Machines
Pulleys are used to help lift heavy objects
 
What is a pulley?
Click 
to load video
on YouTube
here
Click 
to load video
on mocomi.com
here
What is a pulley?
Pulley: 
a simple machine that is used to
change the direction you have to apply
force
 to move an object
The more pulley’s you put together, the easier
it becomes to move
wheel
rope
axle
They work by using a 
wheel
, an 
axle
,
and a 
rope
 
The 
axle
 holds the 
wheel
 in place
The 
wheel
 allows the 
rope
 to move around it
smoothly
The 
rope
 is pulled across the 
wheel
 and 
axle
, making
it easy to lift objects attached to the other side
force
load
What are some examples of 
pulleys
 you
might see in your daily lives?
What are some examples of 
pulleys
 you
might see in your daily lives?
Pulleys are used when objects are too
large
 or 
difficult
 to pick up by hand
Using a 
pulley
 allows you to change the
direction you lift to move an object
Instead of trying to lift an object
from the side, a pulley will allow
you to lift it from the top
This allows you to pull the
object up with more strength
because you can get all of your
weight into it!
Types of Pulleys
Fixed Pulley:
 this type of pulley is attached
to a supporting structure and stays in place
Movable Pulley:
 this type of pulley is able
to move with the object being lifted
Compound Pulley:
 this is when 2 or more
pulleys are put together
Types of Pulleys
 
fixed
moveable
compound
Compound Pulleys
The more pulleys you put together, the
higher the 
mechanical advantage
 of the
pulley system
Each extra pulley in a pulley system helps
reduce 
effort
 needed by 1
Let’s try it!
Use different types of pulleys to lift
different weights!
Write down your observations
Slide Note
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Pulleys are simple machines that change the direction of force needed to move objects, making lifting heavy items more manageable. By utilizing wheels, axles, and ropes, pulleys allow for efficient lifting and lowering of loads. Explore the types of pulleys and examples of their use in daily life, enhancing your understanding of this essential mechanical tool.

  • Pulleys
  • Simple Machines
  • Lifting
  • Mechanics
  • Technology

Uploaded on Sep 29, 2024 | 0 Views


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Presentation Transcript


  1. Pulleys Simple Machines

  2. Pulleys are used to help lift heavy objects

  3. What is a pulley? Click here to load video on YouTube Click here to load video on mocomi.com

  4. What is a pulley? Pulley: a simple machine that is used to change the direction you have to apply force to move an object The more pulley s you put together, the easier it becomes to move

  5. They work by using a wheel, an axle, and a rope wheel rope axle

  6. The axle holds the wheel in place The wheel allows the rope to move around it smoothly The rope is pulled across the wheel and axle, making it easy to lift objects attached to the other side force load

  7. What are some examples of pulleys you might see in your daily lives?

  8. What are some examples of pulleys you might see in your daily lives?

  9. Pulleys are used when objects are too large or difficult to pick up by hand Using a pulley allows you to change the direction you lift to move an object

  10. Instead of trying to lift an object from the side, a pulley will allow you to lift it from the top This allows you to pull the object up with more strength because you can get all of your weight into it!

  11. Types of Pulleys Fixed Pulley: this type of pulley is attached to a supporting structure and stays in place Movable Pulley: this type of pulley is able to move with the object being lifted Compound Pulley: this is when 2 or more pulleys are put together

  12. Types of Pulleys fixed compound moveable

  13. Compound Pulleys The more pulleys you put together, the higher the mechanical advantage of the pulley system Each extra pulley in a pulley system helps reduce effort needed by 1

  14. Lets try it! Use different types of pulleys to lift different weights! Write down your observations

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