# Production relationship in short run Short Run Production Process. To increase output in the short run, a firm must increase the amount used of a variable input. Three relationships are crucial in. The production function relates the quantity of factor inputs used by a business to the amount of output that result. Average product measures output per-worker-employed or output-per-unit of capital. Marginal product is the change in output from increasing the number of workers. In this article we will discuss about the relation between Short-Run Costs and Production. There is a close relation between production and cost in the short-run .

As the marginal product continues to decrease, it will eventually become zero, then negative. This is when the total product declines.

## Short-Run Costs and Production (With Diagram)

The law of diminishing returns states that as successive units of a variable resource are added to a fixed resource, the marginal product of the variable input eventually diminishes, assuming all units of variable inputs- workers in this case are of equal quality.

Marginal product diminishes not because successive workers are inferior but because more workers are being used relative to the amount of plant and equipment available. This office is getting very busy; so more assistants are hired.

The number of patients served by this office cannot increase without limit. Eventually, the additional assistant will not be able to increase the number of patients in this office. It is not because this extra assistant is inferior, but because there is only one doctor in this office. Doctor may be considered as fixed resource, while assistants can be considered variable resources. The average product increases when the marginal product exceeds the average product. The average product falls when the marginal product is smaller than the average product. The average product is at its maximum and does not change when the marginal product equals the average product. This is the usual relationship between average and marginal variables.

### Short-Run Costs and Production (With Diagram)

If your GPA or grade point average is 3. GPA is the average variable; your grade of each class is the marginal variable. A marginal variable which is greater than the average variable will increase the average variable, a smaller than average marginal variable will lower the average variable.

It can be divided into two separate costs in the short run. Marginal decisions are very important in determining profit levels. All curves are U-shaped, except the AFC curve.

The AFC curve is downward sloping because the fixed costs are spread over output. So long as average product of labour increases, average variable cost will fall assuming that the wage rate remains fixed at a particular point of time. When average product falls, AVC increases. Thus, when average product is maximum constant average cost is minimum constant. The shape of the average product curve generates a U- shaped AVC curve. The same type of relation can be discussed between the Law of Diminishing Return and the shape of the MC curve.

### Short-run Production Relationships - Welker's Wikinomics Page

It is to this relation that we turn now. From equation 2 above, we observe that as marginal product rises, marginal cost falls; when marginal product falls, marginal cost rises. The same analysis can be extended to cover a situation which employs several variable factors in the short-run. The average products of some inputs may be increasing while that of others are falling. The same logic dictates that a similar situation holds for the relation between marginal product and marginal cost in the case of several variable factors.

Eventually, declining marginal products will surely cause marginal cost to rise. We may now generalize the relations in the case of several variable factors. Let us suppose that there are n variable factors. We may write the quantities of these inputs used as X1 ,X2, X3, …. Xn and their respective prices as w1, w2, w3, …. Again, the diminishing average products of the variable factors must, after a point, cause AVC to rise.

In a like manner, marginal cost can be expressed as: As in the case of AVC, the diminishing marginal products of the variable factors must, after a certain stage of the production process, cause marginal cost to rise. The manager of a restaurant which is open from 6.