Quiz: Shear Force


Purpose. This quiz has three purposes: to introduce new fluid mechanics content, to give practice with familiar content such as shear stress and flow rate, and to help you improve your abilities to derive equations (in prep. for the final).

Focus of Quiz: Give me results that are good enough to post on my web page. Show the world that you are engineers by showing that you can derive equations and present your results.

Quiz is done in teams of two. 3x Weight. EC for best team.


Turn in cover sheet (this page) plus tasks 1 to 3.

1. Goal Setting

a. Re. the article and examples on derivations, what aspects of this article connect with you? Why are derivations important? What are the best ways to do derivations? List your top 5 factors.

b. How can you distinguish a great derivation from a lousy derivation? That is, what does quality look like in a derivation? List your top 5 factors.

c. List team goals. In writing your goals, consider the following questions: What results do you want? Are your goals and motivations aligned? How will you measure to determine if you hit your goals? Are your goals challenging?

2. Derivations.
a. Skim pp. 281 to 286.
b. Derive Eq. (9.3).
c. Derive Eqs. (9.4) and (9.5)
d. Derive Eq. (9.6), (9.7a), (9.8), (9.9)

3. Reflective Thinking.

As engineers, we want to

  • apply fundamental skills to stay motivated (engaged)
  • apply fundamental skills to learn effectively
  • applying fundamental skills to create great results.

Thus, look back at your work on this quiz and consider how well you stayed motivated, how well you learned, and how well you did in producing great results.

a. What were your strengths? (list three)
b. What are your improvements? (list two)
c. What insights did you have? (list two)

Quality in the quiz

  • (2x) Specific and useful responses on questions 1a, 1b
  • (2x) Goals that are measurable and challenging in 1c
  • (5x) Derivations hit quality criteria defined in article.
  • (2x) RT is specific, useful, engineering relevant


  • Level 5: hit all criteria for quality (see above list)
  • Level 4:
  • Level 3: half-way there on hitting criteria for quality
  • Level 2:
  • Level 1: not yet doing many of the things that produce quality
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