Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Mr Harris - Paper 1 > Fluid Mechanics > Flashcards

Fluid Mechanics Flashcards

1
Q

What is fluid mechanics

A

The study of forces acting on the boy travelling through the air or water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is air resistance

A

The force that opposes the direction of motion of a body through the air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is drag

A

The force that opposes the direction of motion of a body through the water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What factors affect air resistance and drag on the body?

A

Velocity
Frontal cross sectional area
Streamlining
Surface characteristics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How does velocity affect air resistance and drag on the body

A

The greater the velocity the greater the air resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How does frontal cross sectional area affect air resistance

A

The larger the frontal cross sectional area, the larger the air resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is meant by the term ‘frontal cross sectional area’

A

The front area of the body that will be facing the air.
e.g. if you are sitting upright on a bike - it will be your whole torso, whereas if you are bending forwards on a bike, it will just be the top of your head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How does streamlining affect air resistance/drag

A

The more streamlined, or aerodynamic the shape of the body, the lower the air resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is meant by the term streamlining

A

The creation of smooth air flow around an aerodynamic shape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is meant by aerofoil

A

A shape that has a curved upper surface and flat lower surface designed to give additional lift force to a body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Give examples of shapes that are aerofoil

A

The tear drop shaped helmet of a cyclist or a downhill skier

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How do surface characteristics affect air resistance/drag

A

The smoother the surface, the lower the air resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Give a sporting example of how velocity can affect air resistance on a moving body

A

If a cyclist is travelling faster, they will have more air resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Give a sporting example of how frontal cross section area can affect air resistance on a moving body

A

If a cyclist is bending forwards rather than sitting upright they will have a smaller frontal cross sectional area hitting into the air so air resistance will be lower

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Give a sporting example of how streamlining can affect air resistance on a moving body

A

If you have a streamlined shape, such as a tear drop shaped helmet - this is an aerofoil shape, so it reduces air resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Give a sporting example of how surface characteristics can affect air resistance on a moving body

A

A smoother surface of wearing tight lycra will have less air resistance than wearing baggy, woollen clothing

17
Q

Explain what a track cyclist can do to minimise air resistance in order to improve speeds

A

Wear a tear drop shaped helmet to create a streamlined shape, bend forwards to create a smaller frontal cross-sectional area, wear lycra to have smoother surface characteristics

Mr Harris - Paper 1 (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions