Practice Cycling (17.4.1) - Drag and Lift - Fluid Mechanics

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8 questions

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6 sample questions

Question 1.
What is drag force?
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Think about forces opposing motion.
Question 2.
How does a cyclist reduce drag?
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Consider body position.
3Question 3.
What does drag force oppose?
- Gravity
- Velocity
- Motion through fluid
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Think about motion in fluids.
4Question 4.
True or False: Drag is only dependent on the shape of an object.
- True
- False
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Consider all factors affecting drag.
Question 5.
A cyclist in an Olympic race generates a drag force of 10 N while traveling at 15 m/s with a frontal area of 0.4 m². Determine their drag coefficient.
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You need air density for calculations and substitute all values.
Question 6.
If a building's design reduces drag coefficient from 1.2 to 0.8 in a windstorm, calculate the difference in drag force felt by a building with 60 m² frontal area at 20 m/s wind speed.
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Remember to use the same air density value for both calculations.

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