Simple Machines

1. Pulley

1.1. Materials

1.1.1. Wheel and rope

1.2. Examples

1.2.1. Elevator

1.2.2. Window blind

1.2.3. Water well

1.2.4. Flagpole

1.2.5. Crane

2. Inclined plane

2.1. Materials

2.1.1. Surface

2.2. Examples

2.2.1. Funnel

2.2.2. Roof

2.2.3. Slide

2.2.4. Skate ramp

2.2.5. Road

2.2.6. Axe, knife

3. Lever

3.1. Parts

3.1.1. Load

3.1.2. Efford

3.1.3. Fulcrum

3.2. Examples

3.2.1. First class

3.2.1.1. Scissors

3.2.1.2. Seesaw

3.2.1.3. Crowbar

3.2.2. Second class

3.2.2.1. Wheelbarrow

3.2.2.2. Nut cracker

3.2.2.3. Bottle opener

3.2.3. Third class

3.2.3.1. Shovel

3.2.3.2. Stapler

3.2.3.3. tweezers