# List ALL Assumptions

1- Read Carefully

2- Draw a Diagram

3- List Given Information

4- List All Assumptions

Write Equations & Lookup Data

5- 6- Solve Equations

Verify Assumptions

7- 8- Answers

4- List All Assumptions

Making valid assumptions is the key to solving most engineering problems. A good assumption is one that simplifies the problem without significantly reducing the accuracy of the solution.

It is very important that you make a list of all of the most significant assumptions upon which your solution is based. Assumptions regarding things like the curvature of

the Earth and the acceleration of gravity can frequently be omitted from

this list unless they play a key role in the solution of the problem.

the Earth and the acceleration of gravity can frequently be omitted from

this list unless they play a key role in the solution of the problem.

The justifcation for each assumption should be given as well. In many cases, the justification for an assumption will

consist of a short explanation.
However, some

assumptions cannot be justified until the

problem has been solved.
See

Step 7 for more
details.

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