simple machines

1. 2nd class lever

1.1. A lever in which the load lies between the fulcrum and the effort

1.2. paper cutter

1.3. you got to use force to push the lever down

2. 3rd class lever`

2.1. A lever in which the effort is placed between the fulcrum and the load

2.2. using a baseball bat

2.3. you have to use force to move it

3. incline plane

3.1. a plane inclined at an angle to the horizontal

3.2. a ball falling down a hill

3.3. the ball has to fall down the plane

4. screw

4.1. a short, slender, sharp pointed metal pin with a raised helical thread.

4.2. a screw going into a hole.

4.3. It helps when you need to screw a screw into something.

5. pulley

5.1. a pulley is a wheel on an axle.

5.2. I put a marble on one side of a cup and the other side falls.

5.3. It helps you to do work.

6. wheel and axle

6.1. a simple lifting machine consisting of a rope that unwinds from a wheel.

7. Work

7.1. activity involving mental or physical effort

7.2. distance times force

7.3. joule

7.4. I pushed a big ship with my bare hands

7.5. You use your body to move things

8. Power

8.1. the ability to do something or act in a particular way

8.2. force times distance over time

8.3. volts

8.4. you need power to do work

8.5. in order to move or use something, you need power

9. Mechanical Advantages

9.1. It is a measure of the force amplification achieved by using a tool

9.2. output force over input force

9.3. I use a lever to help me

9.4. It helps you and it is easier to do work

10. 1st class lever

10.1. `the force applied to an object or a machine to cause motion

10.2. I sit on a teeter totter

10.3. you have to put force and power into the lever

11. wedge

11.1. a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.

11.2. ax stuck in wood