Simple Machines

1. Screw

1.1. an act of turning a screw or other object having a thread.

1.2. a bolt that holds things in place

1.3. Screw drivers

2. 1st Class Levers

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

2.2. I lever like a seasaw

2.3. Seasaw

3. 2nd Class Levers

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

3.2. Alows you to move heavy objects easyer

3.3. Wheel Barrow

4. 3rd Class Levers

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

4.2. levers the moves small objects fast

4.3. baseball bat

5. Incline Planes

5.1. a plane inclined at an angle to the horizont

5.2. sloped ramp

5.3. Skateboard ramp

6. Mechanical Advantage

6.1. the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.

6.2. Output force/Input force

6.3. Using a wheel barrow or a skateboard ramp

7. Wedge

7.1. 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.

7.2. a block that sicks inbetween things

7.3. a pick axe

8. Work

8.1. activity involving mental or physical effort done in order to achieve a purpose or result.

8.2. Any activity that you are acutally moving

8.3. W=ForceXDistance

8.4. Moving boxxes

9. Wheel and Axle

9.1. a simple lifting machine consisting of a rope that unwinds from a wheel onto a cylindrical drum or shaft joined to the wheel to provide mechanical advantage.

9.2. A machine that used a wheel to pull string and lift things

9.3. fairs wheel

10. Pulley

10.1. A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt along its circumference.

10.2. A wheel that turns and pulls a string.

10.3. Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power.

11. Power

11.1. the ability to do something or act in a particular way, especially as a faculty or quality.

11.2. Watts

11.3. Throwing a baseball or basketball