Which of the following surfaces will not...

Question 1 / 270705eccefa1bacbc34ba4d47225

Question 1 of 270705eccefa1bacbc34ba4d47225

Which of the following surfaces will not develop a hydrodynamic film where motion is accompanied by any appreciable loading?

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Question 1 of 27070

Which of the following surfaces will not develop a hydrodynamic film where motion is accompanied by any appreciable loading?

🔍 Key Concepts

• Hydrodynamic lubrication depends on a converging wedge of fluid between surfaces • A pressure-generating film needs relative motion AND the right geometry of the gap • Think about how parallel vs. nonparallel and curved surfaces affect fluid thickness

💭 Think About

• Which surface combinations create a wedge-shaped clearance where the fluid thickness changes from thick to thin along the direction of motion? • If the gap thickness is the same everywhere between two surfaces, what happens to pressure buildup in the fluid film? • How do curvature and nonparallel alignment influence the ability of the fluid to be dragged in and squeezed to form a lifting pressure?

✅ Before You Answer

• Identify which surface type gives a constant film thickness along the direction of motion • Ask: For each choice, can a converging wedge form under load and motion? • Eliminate any option where geometry makes it impossible to develop load-carrying hydrodynamic pressure in the film

Question 1 of 27070

Which of the following surfaces will not develop a hydrodynamic film where motion is accompanied by any appreciable loading?

Curved surfaces

Flat nonparallel surfaces

Flat inflexible parallel surfaces

All of the above surfaces will sustain a hydrodynamic film while in motion under a load

Question 1 / 270705eccefa1bacbc34ba4d47225

Question 1 of 270705eccefa1bacbc34ba4d47225

Which of the following surfaces will not develop a hydrodynamic film where motion is accompanied by any appreciable loading?

Back

Question 1 of 27070

Which of the following surfaces will not develop a hydrodynamic film where motion is accompanied by any appreciable loading?