Levers and pulleys

Please, click here and write down in your notebook a description about the main ideas and fundamental source of levers and pulleys. In addition, resolve the exercise placed at the end of the text.

Also, you can watch some videos: 1) Levers: https://www.youtube.com/watch?v=Us2KfO_yrPA 2) Pulleys: https://www.youtube.com/watch?v=9T7tGosXM58