Bibliography
| What is Mechanical efficiency | Practice test | Practice test answers | Bibliography |

Content: 1) Investigating SCIENCE AND TECHNOLOGY 8. Canada: Reid McAlpine, 2008.

Pictures:

1)"Inclined plane" Branches of Science, viewed April 2nd 2013 <Encyclozine.com>

Videos: What is an Inclined Plane. Youtube video. Youtube, 2013.

Eureka 7 Weight v.s. Mass mov. Youtube video. Youtube, 2013.

MECHANICAL EFFICIENCY. Youtube video. Youtube, 2013.

How Levers Work. Youtube video. Youtube, 2013.

What is a Pulley. Youtube video. Youtube, 2013.

What is a Lever. Youtube video. Youtube, 2013