Practice Force Due To Viscosity (friction) (16.1.1) - Forces and Shear Stress in Fluids

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8 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is shear stress?
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Think about forces acting along surfaces.
Question 2.
What does dynamic viscosity measure?
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It involves fluid friction.
3Question 3.
What defines shear stress in a fluid?
- Force per unit area acting perpendicular
- Force per unit area acting parallel
- Density of the fluid
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Remember how forces act on surfaces.
4Question 4.
True or False: Reynolds number is a measure of fluid density.
- True
- False
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Think about what Reynolds number compares.
Question 5.
Calculate the drag force on a prototype vehicle if the drag coefficient is 0.45, frontal area 2.5 m², and velocity 30 m/s.
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What does each term in the equation represent?
Question 6.
Discuss how to optimize a vehicle's shape to reduce drag based on aerodynamic principles derived from viscosity concepts.
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Use concepts of laminar vs. turbulent flow for optimization.

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