# What are the six different simple machines

## Difference Between Simple and Compound Machines

In general, a machine is a device that uses energy to do work. Machines have an enormous range of applications in the industrial, commercial, residential and all other areas that produce or examine things. The two basic types of machines are simple machines and compound machines. The Difference Between Simple and Compound Machines is that a compound machine is a collection of simple machines working in tandem.

### Simple machines

A simple machine is the simplest device that does work. A simple machine applies a single force to a single load and generally acts as a building block in the development of more complex compound machines. Simple machines usually fall into one of six categories including: lever, wheel and axle, pulley, inclined plane, wedge, and the screw. Simple machines do not contain an energy source and therefore cannot do more work than when they were used.

### Kinds of simple machines

A lever is an object that acts as a fulcrum and multiplies the force that can be applied to another object. The wheel and axle is a rod attached to a wheel that can multiply an applied force. A pulley consists of a wheel on an axle with a rope that runs over the wheel. Pulleys are used to change the direction of an applied force. The inclined plane is a flat surface with ends at different heights. Sloping planes reduce the force needed to move an object. Wedges are triangular in shape and are used to separate, hold, or lift an object. Screws are cylindrical shafts with grooves that pass or move other objects by rotational force.

### Compound machines

Compound machines are a collection of simple machines that work together. Compound machines are the most common type of machine and do more complex jobs than individual simple machines. They do more work and therefore offer a greater advantage than simple machines. Compound machines can consist of various and innumerable combinations of simple machines

### Types of compound machines

There is a wide variety of compound machines available for a wide variety of tasks. Some examples of compound machines include: bicycles, pliers, wheelbarrows, and scissors. In the case of bicycles, the pedals and wheels form interacting wheel and axle systems, the brakes are levers and the parts are held together with several screws. Pliers are designed with multiple levers. A wheelbarrow is a combination of a lever, wheel and axle. Scissors consist of two pivoting levers.
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