1 / 9

Levers

Levers. Bret Chalpin, McCoy Smith, and Elaina Donlon. Levers. Levers are one of the basic tools that were probably used in prehistoric times. Levers were first described about 260 BC by the ancient Greek mathematician Archimedes (287-212 BC). Types of Levers.

jerzy
Télécharger la présentation

Levers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Levers Bret Chalpin, McCoy Smith, and Elaina Donlon

  2. Levers • Levers are one of the basic tools that were probably used in prehistoric times. Levers were first described about 260 BC by the ancient Greek mathematician Archimedes (287-212 BC).

  3. Types of Levers • There are three main types of levers. • Type 1 levers • Type 2 levers • Type 3 levers

  4. Type 1 Levers • In a Type 1 Lever, the pivot (fulcrum) is between the effort and the load. In an off-center type one lever (like a pliers), the load is larger than the effort, but is moved through a smaller distance. • Some examples are seesaws, scissors, and pliers.

  5. Type 2 Levers • In a Type 2 Lever, the load is between the pivot (fulcrum) and the effort. • Some examples are staplers, bottle openers, and nail clippers

  6. Type 3 Levers • In a Type 3 Lever, the effort is between the pivot (fulcrum) and the load. • Some examples are fishing rods, tweezers, and tongs.

  7. Questions

  8. 1. What scientist first described levers? • 2. What type of lever has the load between the fulcrum and the effort? • 3. What type of a lever are scissors?

  9. Answers • 1. Archimedes first introduced the lever. • 2. Type 2 levers have the load between the fulcrum and the effort. • 3. Scissors are a type 1 lever.

More Related