16.1.1 - Force due to Viscosity (Friction)
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Practice Questions
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What is shear stress?
💡 Hint: Think about forces acting along surfaces.
What does dynamic viscosity measure?
💡 Hint: It involves fluid friction.
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Interactive Quizzes
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What defines shear stress in a fluid?
💡 Hint: Remember how forces act on surfaces.
True or False: Reynolds number is a measure of fluid density.
💡 Hint: Think about what Reynolds number compares.
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Challenge Problems
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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.
💡 Hint: What does each term in the equation represent?
Discuss how to optimize a vehicle's shape to reduce drag based on aerodynamic principles derived from viscosity concepts.
💡 Hint: Use concepts of laminar vs. turbulent flow for optimization.
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