1 / 7

EQUILIBRIUM

This article explores how forces influence the shape, equilibrium, movement, and state of rest of bodies. The classification of bodies as plastic, rigid, or elastic is discussed, along with their behavior when forces are applied to them. The concept of elastic limit and breaking point is explained, along with examples of malleable, plastic, and rigid materials. The article also delves into the behavior of the human body under small and hard forces, as well as the analysis performed on car components to prevent injuries in accidents.

hildredr
Download Presentation

EQUILIBRIUM

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. When forces act on bodies, they influence the bodies’ cause changes in their cause changes in their SHAPE EQUILIBRIUM MOVEMENT OR STATE OF REST depending on the NATURE OF THE BODY INTENSITY OF THE FORCE bodies are classified as PLASTIC (MALLEABLE) RIGID (HARD) ELASTIC if, once the force stops, if, once the force stops, if, once the force stops, THEY REMAIN DEFORMED THERE IS NO NOTICEABLE CHANGE THEY RECOVER THEIR ORIGINAL SHAPE ACTIVITIES

  2. A spring is an example of an elastic body. Rubber bands and balloons are other examples. However, there are no perfectly elastic bodies. For example, if you pull very hard on a spring, you’ll change its shape permanently, and it will no longer behave like an elastic material. When this happens, we say that the spring’s elastic limit has been exceeded (this is shown in the photo). The body will now behave like a malleable material.

  3. Malleable materials remain deformed after a force has been applied. Plasticine is an example of a malleable material. Just as there are no perfectly elastic bodies, there are no perfectly malleable bodies. If we apply a strong enough force, they break. This is a characteristic shared by all bodies, and the maximum force we can apply without breaking them is called the breaking limit.

  4. We cannot observe deformations in rigid, or hard, materials, like the rocks shown in the photo on the right. However, these bodies also have a breaking point: all we have to do is apply a strong enough force. Some bodies, like glass, have a very low breaking point. They can be broken using a weak force. We call these fragile materials.

  5. 1. Cars used to be made of hard materials, but now they are now made of more malleable materials, and engineers perform careful analyses on the deformations that would occur in the hard components of the car in the case of an accident in order to prevent passengers from being injured: a) Why do you think this is? b) How do you think the human body behaves when small forces are applied to it? And when it is hit very hard?

  6. What type of body does a spring become when its elastic limit is exceeded? 2. • Elastic. • Plastic. • Rigid. 3. Classify the bodies on the right as elastic, plastic and rigid, considering how or whether they change shape when a force is applied to them.

  7. 4. Analyse the behaviour of the trees in the photo according to how or whether they change shape when a force is applied to them.

More Related