1 / 8

Lever

Lever. By: Olivia and Kari. Machine. Our machine is the Lever. A lever is a rigid bar that is free to move around a fixed point. How Does it work?. There are three types of lever.

braima
Download Presentation

Lever

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. Lever By: Olivia and Kari

  2. Machine • Our machine is the Lever. • A lever is a rigid bar that is free to move around a fixed point.

  3. How Does it work? • There are three types of lever. • The first lever is called First-Class Levers. For an example a screwdriver being used as a first-class lever to open a paint can. • The second lever is called Second-Class Lever. For an example is a wheelbarrow, it rotates around its fulcrum. • The third lever is called Third-Class Lever. The output distance over which the third-class lever exerts its force is always larger than the input distance you move the lever through.

  4. This is what a lever looks like.

  5. What is it used for. • It can be used for your wheelbarrows. • A screwdriver with a paint can. • You sweeping the ground.

  6. How do you calculate IMA for your machine? • To Calculate the ideal mechanical advantage of any lever, divide the input arm by the output arm.

  7. Other important information • The word lever came from the French. • The earliest remaining writings regarding levers date from the 3rd century BC and were provided by Archimedes. "Give me a place to stand, and I shall move the earth." is a remark of Archimedes who formally stated the correct mathematical principle of levers (quoted by Pappus of Alexandria).

  8. Reference • http://en.wikipedia.org/wiki/Lever • Physical Science Concepts in Action

More Related