Shapes Of Total Product, Marginal Product and Average Product Curves

The shape of the total product curve is a function of specialization, teamwork and utilising the variable input with the fixed inputs. The TP (total product) curve represents the total amount of output (end result) that an enterprise can manufacture within a provided amount of labor. As and when the amount of labor changes, total output changes.

Total Product Curve

We quantify units of labour along with the horizontal axis and output (end result) along with the vertical axis. With L quantities of labour, the enterprise can manufacture q1 quantities of output at most.

According to the law of variable proportions, the marginal product of an input initially increases and after a definite level (degree) of employment, it starts decreasing.

The MP curve hence, looks like a reverse ‘U’ shaped curve as in diagram Average And Marginal Product Curves. Now, let us see what the AP curve appears to be. For the 1st unit of the variable input, one can easily have a look at it and come to a conclusion that both the MP and AP are alike. Now as we rise the amount of input, the MP increases. AP being the aggregate of marginal products, also increases, but increases less than MP. After a point, the MP starts decreasing. As long as the value of MP stays higher than the value of the AP, the AP continues to increases. Once MP has decreased sufficiently, its value becomes less than the AP and the AP also starts decreasing. AP curve is also reverse ‘U’ shaped.

Average And Marginal Product Curves

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