Physics Classroom is making strides to make our site accessible to
everyone, and features many accessibility features.
Our site contains 6 navigation areas. The Primary, Secondary,
and Page Level navigations have a screen reader version of their nav
structure that allows using the left and right keys to navigate sibling
navigation items, and up or down keys to navigate parent or child
navigation items. The others can be navigated using tabs.
Within the main content, we leverage headers to provide in page or
in tool navigation.
Although we are still rebuilding our content to leverage these tools,
our images should have both short and verbose descriptions, the later
describing in great detail the image for those who cannot see. Any
formulas found within the images are often in the image figure below the image.
Equations and formulas are rendered using MathJax, which has both verbal,
braille (including nemath braille), and keyboard navigation within them.
Learn how to configure and leverage this for various screen readers on our
Equation Navigation Page.
While not every area of
Physics Classroom is usable purely from keyboard and screen reader, we
are committed to continue work on making this possible. If you have
questions or need additional help, please use
this link to
contact us
.
Forces, Energy, and System Analysis Video Tutorial
The Forces, Energy, and System Analysis Video Tutorial explains the importance of a system analysis in keeping track of energy for any given motion scenario. The distinction between conservative and non-conservative forces and the relationship of each to the total amount of mechanical energy is discussed. Numerous examples, illustrations, and analogies assist in the explanations.
The video lesson answers the following questions:
What is meant by a system and how can it be used to conduct an energy analysis?
What is a conservative force and how is it related to the amount of mechanical energy?
What effect do non-conservative forces have on the energy of a system?
Concept Builder, Work and Energy Section: Work
In this Concept Builder, you will learn to identify whether positive, negative, or zero work is being done, to identify the force that is doing the work, and to describe the energy transformation associated with such work. This is a great follow-up to the video.
Physics Tutorial - Work, Energy, and Power Chapter, Internal vs. External Forces
When you need to brush up on any topic, we recommend a trip to the Physics Classroom Tutorial. Its easy-to-understand language combined with informative graphics and appeals to your sense of reason make this a powerful learning tool. This page is the written equivalent of the video.
Teacher Toolkits, Work-Energy Relationships
Try a Teacher Toolkit ... you might be very glad that you did. Each toolkit includes annotated links to vetted resources from across the web that we feel reliably support the specific topic. Give this one on work and energy a try.
Minds On Physics, Work and Energy Module - Mission WE5
Minds On Physics is both hated and loved by students. Like good medicine, it doesn't always taste good when you're taking it but the results are just what the doctor ordered. This mission provides a nice fit with the video.
Concept Builder, Work and Energy Section: Work
In this Concept Builder, students will learn to identify whether positive, negative, or zero work is being done, to identify the force that is doing the work, and to describe the energy transformation associated with such work. It's this third activity that is most closely associated with this video.
Physics Tutorial - Work, Energy, and Power Chapter - Internal vs. External Forces
Our Tutorial section is the textbook on the site. Its also the most trafficked section of the site. And for good reason. It proves time and again that anyone can understand Physics. This page is the written equivalent (roughly) of the video tutorial. Point troubled students to this page. Point all your students to this page.
Slides
Do you like the slides we used? They are available in our low cost Teacher Presentation Pack, along with other updated materials used in our presentation.