1. Engineering
Simple machines

2. What is a simple machine?
Device with few pieces
Allows mechanical energy to be used more efficiently
Reduce the force and time needed to perform a task
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3. Example of a simple machine

4. 1.0 Inclined plan
A flat surface that is set at an angle to a horizontal surface
It spreads the force needed to raise or lower a load over a larger distance.

5. 1.1 Inclined planes

6. 1.2 Wedges

7. 1.3 Screws

8. 2.0 Lever
It is a simple machine composed of a rigid piece that can pivot around a fulcrum.

9. 2.1 First class lever

10. 2.2 Second class lever

11. 2.3 Third class lever

12. 3.0 Wheel and axle
Uses the difference between the wheel and the axle to reduce the force needed or increase the distance an object can travel.

13. 3.1 Wheels

14. Made up of a wheel with a groove along the edge.
3.2 Pulleys
Made up of a wheel with a groove along the edge.