# Simple Machines

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Simple Machines

## 1. work

### 1.1. Definition

1.1.1. Book Defintion - product of distance and the force in the direction an objects work

1.1.2. My Definition - something that changes position that uses energy

### 1.2. Formula

1.2.1. W=Force+Distance

1.3.1. Joules

### 1.4. Example

1.4.1. 45N*3M=135 Joules

### 2.1. Definition

2.1.1. Book Definition- a measure of the force amplification achieved by using a tool

2.1.2. My definition - Using a tool to make work easier

### 2.2. Formula

2.2.1. MA=Output force/Input Force

2.2.2. Ma=Input Distance/Output Distance

2.3.1. NO UNITS

### 2.4. Exampes

2.4.1. 78N/15N=5.2

2.4.2. 5.0/1.5=3.33

## 3. power

### 3.1. Definition

3.1.1. Book Definition - Doing work

3.1.2. My Definition - Doing Work

### 3.2. Formula

3.2.1. P=Work/Time

3.3.1. Watts

### 3.4. Examples

3.4.1. 135J/2=67.5T Watts

## 4. 1 class lever

### 4.1. Definition

4.1.1. Book Definition - a movable bar that pivots on a fulcrum attached to a fixed point.

4.1.2. My Definition - a movable bar on a fixed point

### 4.2. Examples

4.2.1. A hammer

4.2.2. scissors

4.2.3. tater totter

## 5. Wedge

### 5.1. Definition

5.1.1. Book Definition: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.

5.1.2. My Definition: something that is shoved under a door that stops the door.

### 5.2. Example

5.2.1. door wedge

## 6. 2 class lever

### 6.1. Definition

6.1.1. Book definition: have the load between the effort and the fulcrum

6.1.2. My Definition: Something that helps you do stuff easier

### 6.2. Example

6.2.1. Wheelbarrow

6.2.2. paper cutter

## 7. 3 Class Lever

### 7.1. Definition

7.1.1. Book Definition:A lever in which the effort is placed between the fulcrum and the load.

7.1.2. My definition: Helps you do stuff

7.2.1. Broom

7.2.2. Bat

## 8. Inclined Plane

### 8.1. Definition

8.1.1. Book Definition:a sloping ramp up which heavy loads can be raised by ropes or chains.

8.1.2. My Definition A ramp

8.2.1. ramp

8.2.2. slide

## 9. Screw

### 9.1. Definition

9.1.1. Book Definition:a short, slender, sharp-pointed metal pin with a raised helical thread running around it and a slotted head, used to join things together by being rotated so that it pierces wood or other material and is held tightly in place.

9.1.2. My Definition: something that goes inside a wall to hold stuff up.

### 9.2. Example

9.2.1. Jar lide, light bulb

## 10. Wheel and Axle

### 10.1. Definition

10.1.1. Book Definition: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.

10.1.2. My definition: helps you turn a car or a bike

## 11. Pulley

### 11.1. Definition

11.1.1. Book Definition:a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights.

11.1.2. My definition: A rope that helps you lift heavy objects

### 11.3. How they relate to simple machines

11.3.1. Because it helps you do stuff easier