Practice Summary Of Key Points (19.6.1) - Surface Forces and Stress Tensors

Practise this section

8 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define the term 'stress tensor'.
Show hintHide hint
Think about the components of force within a solid.
Question 2.
What components does the stress tensor consist of?
Show hintHide hint
Recall the three axes we often use in mechanics.
3Question 3.
What does a stress tensor represent?
- A single force
- A distribution of internal forces
- External forces only
Show hintHide hint
Consider the internal interactions rather than external.
4Question 4.
True or False: Shear stress acts perpendicular to the surface.
- True
- False
Show hintHide hint
Think about the motion of fluids relative to surfaces.
Question 5.
Given a fluid statics problem involving a submerged object, calculate the resulting stress tensor at various points.
Show hintHide hint
Think of pressures acting in different directions and resolve.
Question 6.
How would you design a control volume for a complex flow system to simplify calculations? Discuss the steps needed.
Show hintHide hint
Focus on what components are essential for your analysis.

4 more questions in this section. Enroll free to practise them all.