Jan 28, Dec 16, Recommended for you. Nuclear radiation used to transmit digital data wirelessly Nov 10, Load comments 0. Let us know if there is a problem with our content. Your message to the editors. Your email only if you want to be contacted back. Send Feedback. Thank you for taking time to provide your feedback to the editors. E-mail the story What is Hooke's Law? Your friend's email. Your email. I would like to subscribe to Science X Newsletter.
Learn more. Your name. Note Your email address is used only to let the recipient know who sent the email. Your message. Your Privacy This site uses cookies to assist with navigation, analyse your use of our services, collect data for ads personalisation and provide content from third parties.
Ok Cookie options. E-mail newsletter. It appears that you are currently using Ad Blocking software. What are the consequences?
You get onto the bathroom scale. You want to know how much cabbage you are buying in the grocery store.
You put the cabbage onto the scale in the grocery store. The bathroom scale and the scale in the grocery store are probably spring scales. They operate on a simple principle. They measure the stretch or the compression of a spring.
When you stand still on the bathroom scale the total force on you is zero. Gravity acts on you in the downward direction, and the spring in the scale pushes on you in the upward direction. The two forces have the same magnitude. Since the force the spring exerts on you is equal in magnitude to your weight, you exert a force equal to your weight on the spring, compressing it. The change in length of the spring is proportional to your weight. Spring scales use a spring of known spring constant and provide a calibrated readout of the amount of stretch or compression.
In order to produce a deformation, work must be done. That is, a force must be exerted through a distance, whether you pluck a guitar string or compress a car spring.
If the only result is deformation and no work goes into thermal, sound, or kinetic energy, then all the work is initially stored in the deformed object as some form of potential energy. Elastic energy is the potential mechanical energy stored in the configuration of a material or physical system when work is performed to distort its volume or shape.
For example, the potential energy PE el stored in a spring is. It is possible to calculate the work done in deforming a system in order to find the energy stored. This work is performed by an applied force F app.
Elastic energy of or within a substance is static energy of configuration. Other top stories on FutureLearn. Category: General. We take a closer look at media literacy and what makes it so important in ….
Register for free to receive relevant updates on courses and news from FutureLearn. Create an account to receive our newsletter, course recommendations and promotions. Register for free. FutureLearn offers courses in many different subjects such as. This article is from the free online. Our purpose is to transform access to education. Register to receive updates. Visit the source of this article and learn more! Before You Go! Why Not
0コメント