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Back to Overall Map Basic Skills Problem Solving Data and Graphical Analysis Estimation Statistics Sig Figs and Error Units


When are Units Covered?

Units are introduced in ENGR111 during Class 6.2 and are explained further in Class 9.2.

*Explaination of Class numbering System


Class 6.2: Units and Dimensions -1
Know the difference between units and dimensions
Understand the SI, USCS, and AES systems of units
  Know the SI prefixes from nano- to giga-
  Understand and apply the concept of dimensional homogeneity
Class 9.2 Units and Dimensions-2
  Know the difference between an absolute and a gravitational system of units
  Know what makes a system of units a coherent or noncoherent system
  Know how to do various conversions

Class Agenda

Class 6.2: Units and Dimensions-1
Mainly lecture material on Units and Dimensions
Practical application to real-world situation at NASA
Class 9.2: Units and Dimensions-2
Individual exercise on dimensional homogeneity
Lecture Material on Units and Dimensions
Exercise on Temperature conversions
  Examples of various conversions
  HW problem -given 10 minutes in class to begin solving

Why is Problem Solving Important?

Units are used to describe all physical properties. They are crucial for determining the correct answer in the problem solving process. Units enable engineers to communicate with each other in a technical language both verbally and nonverbally.

The following systems of units are used throughout the engineering profession:

1. International System of Units (SI)

2. U.S. Customary System of Units (USCS)

3. American Engineering System of Units (AES)

Links to Class Materials

  • Class 6.2 Powerpoint
    • Fundamental Units (SI)
    • Derivation of gc
  • Class 9.2 Powerpoint
  • Systems of Units





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