1. Machines

2. What is a Machine?
A machine is a device that changes a force Machines make work easier to do. They change the size of the force needed, the direction of a force, or the distance over which a force acts

3. What is a Machine?
Example: A car jack makes it easier to lift up a part of a car. It aids you in increasing the force applied to the car

4. Simple Machines
A simple machine is a very basic mechanical device Usually were invented or utilized in ancient times

5. Simple Machines
There are six types of simple machines Lever Wheel and Axle Inclined Plane Wedge Screw Pulley

6. Lever
A lever is a rigid bar that is free to move around at a fixed point They usually make lifting heavy objects a lot easier

7. Wheel and Axel
Consists of at least one discs (wheel) connected by an axel

8. Inclined Plane
An inclined plane is a slanted surface along which a force moves an object from one level of elevation to another

9. Wedges
A v-shaped object that is usually used to break objects apart

10. Screw
A screw is an inclined plane that is wrapped around a cylinder

11. Pulleys
A pulley is a machine that consists of a rope that fits into a wheel Pulleys are used to make it easier to lift heavier objects

12. Video

13. Compound Machine
A compound machine is a machine that uses a combination of two or more simple machines that work together They can be relatively simple or extremely complex

14. Compound Machine
Simple compound machines

15. Compound Machines
Complex Compound machines