How to solve problems on thermo

The structure of various mechanisms is based on the laws of theoretical mechanics; therefore, the study of this discipline is widespread in educational institutions that train technical specialists. Independent solution of problems in thermo-chemistry works as well as possible to consolidate theoretical material.

Instruction manual

one

To solve the problem of thermal bath, divide your actions into several main stages. The first and most important is a thorough study of the initial data of the problem. Theoretical mechanics, like any other technical field, does not suffer inaccuracies, so carefully read each phrase and fix in your head all the initially known quantities.

2

At the second stage, draw a conditional image of the initial data of the task. A schematic arrangement of the conditions of the problem will allow you to more clearly evaluate what and how you can use it when solving.

3

All tasks in theoretical mechanics are based on studying the behavior of bodies: material points, a system of material points, a solid body, etc. In this case, the laws of motion of bodies, the action of forces or other bodies on them are considered. Therefore, the figure should contain the maximum amount of information that will be needed to find the desired values.

4

Look at the picture, answer a few questions. At this point, you create in your head a plan for future calculations. To begin with, decide which body or set of bodies is considered in the problem, how they move, what forces act in this system, are there sources of external influence. In other words, your drawing is the most detailed model of body behavior.

5

Think about how much you should find. In what units it is measured, what mechanical laws and formulas you can use to find it. What quantities are involved in these calculations and how can they be found using the source data.

6

Once the plan has matured in your head, transfer it to paper. As a rule, tasks are solved by the result. Those. write down the formula for the quantity to be found. Next, write down the formulas for the component quantities, if they are unknown. Find them and substitute them into the formula written above, add justifications or conclusions if necessary. In parentheses, add the dimension of the resulting value.