#### • Class 11 Physics Demo

Explore Related Concepts

# 8 Class Physics Working Models

8 class physics working models are a physics working model which is based on the concepts studied in the 8th class. In working model, first important point is to understand the basic concepts of the topic which working model is based on. If the theoretical concepts (which include theory as well as the related formulas) are clear, then we can easily apply to make working models. Working models in physics are of three types, one which already exists, second which is already existing but modified to improve the efficiency etc, and the last one is related to the new discovery of something. The base of all this is to make the working model of those equipment which are already existing. Because this will not only increase the confidence but practically it will the facts and figures in much better way. The same facts and figures can be utilized later for R & D purpose.

Now here we will try to make one working model based on 8 class physics topic. Let us suppose the topic is ‘Force and Pressure’. Based on this topic we can make one working system where pressure requirement is minimum, it means the force requirement is minimum. This is very simple working model. Sometimes we push stone with lot of force on some area of stone that is we actually apply lot of pressure but in turn the result is not satisfactory. To make the result satisfactory we need to design such thing which can help in forcing the stone to move from one position to other with minimum pressure.

Since we know that pressure = force/area, so to minimize the pressure we need to minimize the force actually. For that case we can design the lever with the help of above formula and also with the help of trigonometry. If the force and pressure concept is clear, one can make lever design in better way. One can design the lever such the pressure applied with minimum. Since the stone is in the sphere then we have to see that lever will act on maximum area with minimum force. Maximum area is required because pressure is inversely proportional to the area. So if area will be maximized then in that case pressure will be less and also if the force will be minimized then the pressure will also be minimized. So this way we can save our lot of energy in pushing the stones.

From above working model it is very clear that if physics concepts are clear then one make effective working models. The effective working model means the working models which are really helpful in saving our energy. So if we summarize this, then we can say that the physics concepts along with some mathematical knowledge are the building of the physics working model. It is also important note that understanding of physics formula is not only important point but its application in different situation and in different environmental conditions area also very important and it is also critical. So this is all about 8 class physics working models.

#### Best Results From Wikipedia Yahoo Answers Encyclopedia Youtube

From Wikipedia

Working class

Working class (or Lower class, Labouring class) is a term used in the social sciences and in ordinary conversation to describe those employed in lower tier jobs (as measured by skill, education and lower incomes), often extending to those in unemployment or otherwise possessing below-average incomes. Working classes are mainly found in industrializedeconomies and in urban areas of non-industrialized economies.

As with many terms describing social class, working class is defined and used in many different ways. When used non-academically, it typically refers to a section of society dependent on physical labor, especially when compensated with an hourly wage. Its use in academic discourse is contentious, especially following the decline of manual labor in postindustrial societies. Some academics question the usefulness of the concept of a working class.

The term is usually contrasted with the Upper classandMiddle class, in general terms of access to economic resources,education and cultural interests. The cut-off between Working class and Middle class is more specifically where a population spends money primarily as a lifestyle rather than for sustenance (for example, on fashion versus merely nutrition and shelter).

Its usage can alternately be derogatory, or can express a sense of pride in those who self-identify as Working class.

## Definitions

Definitions of social classes reflect a number of sociological perspectives, informed by anthropology, economics, psychology and sociology. The major perspectives historically have been Marxism and Functionalism.. The parameters which define working class depend on the scheme used to define social class. For example, a simple stratum model of class might divide society into a simple hierarchy of lower class, middle class and upper class, with working class not specifically designated. Due to the political interest in the working class, there has been debate over the nature of the working class since the early 19th century. Two broad schools of definitions emerge: those aligned with 20th-century sociological stratum models of class society, and those aligned with the 19th-century historical materialism economic models of the Marxists and anarchists. Key points of commonality amongst various ideas include the idea that there is one working class, even though it may be internally divided. The idea of one single working class should be contrasted with 18th-century conceptions of many laboring classes. Sociologists Dennis Gilbert, James Henslin, William Thompson, Joseph Hickey and Thomas Ayling have brought forth class models in which the working class constitutes roughly one third of the population, with the majority of the population being either working or lower class.

### Marxist definitions

Karl Marx defined the working class or proletariat as individuals who sell their labor power for wages and who do not own the means of production. He argued that they were responsible for creating the wealth of a society. He asserted that the working class physically build bridges, craft furniture, grow food, and nurse children, but do not own land, or factories. A sub-section of the proletariat, the lumpenproletariat (rag-proletariat), are the extremely poor and unemployed, such as day laborers and homeless people.

In The Communist Manifesto, Marx argued that it was the destiny of the working class to displace thecapitalist system, with the dictatorship of the proletariat, abolishing the social relationships underpinning the class system and then developing into a future communist society in which "the free development of each is the condition for the free development of all." In Capital, Marx dissected the ways in which capital can forestall such a revolutionary extension of the Enlightenment. Some issues in Marxist arguments about working class membership have included:

From Encyclopedia

Physics

physics

Question:i have to make a working model on algebraic expressions. how to make a WORKING MODEL? help!first tell me what a working model is! the algebraic identity is (a+b)squared = asq+bsq+2ab so pls help!

Answers:take a cardboard....stick a paper on it...write on the left side a+b^2 solving by putting in values.....on the right side rite a^2 +b^2 +2ab....and use matchsticks to represent values....hope u understand???

Question:i am in class 9 and want to make a working model of physics which is easy and please provide the steps how to make it.

Answers:Just do a pendulum. Attach a weight to a string and let it swing.

Question:i am in class 9th, i have to make such model which is best in school.please give some topics name & their explaniation with their simple method to made.