# simple machines.pptx

1 Dec 2022
1 sur 9

### simple machines.pptx

• 1. Physical and Biological Science Name: Jason Marshall
• 2. Simple Machines (Levers)
• 3. How do we open a bottle?
• 4. Why is it easier to use an opener?
• 5. Levers  A lever is a machine that turns about a pivot. It consist of the effort (the applied force), load (the object on which the force is being applied) and pivot (point where most movement occurs) .  A lever provides mechanical advantage. Mechanical advantage refers to how much a simple machine multiplies an applied force. Whatever little force we apply, the lever will multiply it. This means when using a lever we don’t have to apply as much force.  We can use the least amount of effort. This makes our work easier  The location of the effort, load, and pivot will determine the type of lever.
• 6. Types of Levers:  First Class Lever  Second Class Lever  Third Class Lever
• 8. Examples
• 9. Conclusion  A lever makes work easier for man because it allows us to exert less force.  A lever consist of consist of the effort (the applied force), load (the object on which the force is being applied) and pivot (point where most movement occurs) .  There are three types of levers:  1st class lever  2nd class lever  3rd class lever