SlideShare a Scribd company logo
Friction
MUHAMMAD MAAYER
5-F
Forces: Friction
Friction is a force that
opposes motion between two
surfaces.
Forces: Friction
Friction occurs because the surface of any object is rough.
Even surfaces that feel smooth are covered with microscopic
hills and valleys.
Forces: Friction
When two surfaces are in contact, the hills and
valleys of one surface stick to the hills and
valleys of the other surface.
Friction Factors
The amount of friction depends on these 2 factors:
1. Roughness of the surfaces/texture
2. The force pushing the surfaces together.
Will the tube roll less over a smoother surface or a
rougher surface? Why?
Smooth Surface
Rough Surface
The rougher surface because there are more
hills and valleys and the valleys are deeper.
Which has more friction and why?
100 pounds
The 100 pound box because the
force pushing together is higher
so the hills and valleys are in
closer contact.
40 pounds
Friction Factors
1. Roughness – The rougher the surface, the
more hills and valleys there are and the
greater the friction.
2. Force pushing together/weight – Force is
increased, the hills and valleys will be in closer
contact and friction will increase.
Amount of Surface Area in fluids
• The amount of surface area affects the friction
between objects in liquids and gases. Example:
Swimming
Types of Friction
1. Sliding
2. Fluid
3. Rolling
4. Static
Sliding Friction
• Sliding friction is a friction force
that opposes the direction of motion
of an object that occurs when solid
surfaces slide over one another.
• Examples:
• Writing – pencil point and paper
• Combing your hair – surface of
comb and strands of hair
Fluid Friction
• The force that tries to slow objects down when they move
through a liquid or a gas. It's also known as "drag", or "air
resistance".
• All gases and liquids are fluids.
• Fluid Friction increases as the speed of the object
increases.
• An airplane and a swimmer both experience fluid friction.
Rolling Friction
• Rolling friction is friction that
occurs between surfaces in motion
that are rolling in which one of
the surfaces is a wheel, roller, or
ball.
• Examples:
• Riding a bike – tires and ground
• Bowling – ball and lane
Static Friction
• Static friction is friction that
occurs when the surfaces in
contact are at rest (not in
motion).
• Examples:
• A book resting on a desk.
• A potted plant sitting on a
sidewalk.
Ways to Reduce Friction
• Smooth the surface – less hills and valleys and not as
deep.
• Replace sliding with rolling (Use Wheels)
• Add a lubricant like oil, wax, or grease – Fills in the hills
and valleys.
• Less force pushing together – The hills and valleys are
not pushed together as hard so they have less contact.
Ways to Increase Friction
• Rough the surface – more hills and valleys
• Replace rolling with sliding
• More force pushing together – The hills and valleys are
pushed together harder so the hills and valleys are in
closer contact.
Friction Song
•What is friction?
•Friction Video
Glass
Forces: Friction
Surfaces that may cause more friction.
Sandpaper
Carpet
Gravel
ICE
Tile
Surfaces that may cause less friction
Forces: Friction
Friction is both harmful and helpful.
Forces: Friction
FRICTION.pptx

More Related Content

Similar to FRICTION.pptx

Friction
FrictionFriction
Friction
Logos Academy
 
Ch.11.less.1.how are forces and motion related
Ch.11.less.1.how are forces and motion relatedCh.11.less.1.how are forces and motion related
Ch.11.less.1.how are forces and motion related
Reem Bakr
 
Ch 150407052236-conversion-gate01
Ch 150407052236-conversion-gate01Ch 150407052236-conversion-gate01
Ch 150407052236-conversion-gate01
omneya_ghis ghis
 
Ch 150407052236-conversion-gate01
Ch 150407052236-conversion-gate01Ch 150407052236-conversion-gate01
Ch 150407052236-conversion-gate01
omneya_ghis ghis
 
Ch.11.less.1.how are forces and motion related?
Ch.11.less.1.how are forces and motion related?Ch.11.less.1.how are forces and motion related?
Ch.11.less.1.how are forces and motion related?
DrSarahAyoub
 
Friction
FrictionFriction
Friction
maryjane0116
 
Friction
FrictionFriction
3RD QUARTER SCIENCE 6 FRICTION01 PPT.pptx
3RD QUARTER SCIENCE 6 FRICTION01 PPT.pptx3RD QUARTER SCIENCE 6 FRICTION01 PPT.pptx
3RD QUARTER SCIENCE 6 FRICTION01 PPT.pptx
SherwinAlmojera1
 
Friction
FrictionFriction
Friction (CBSE Board)
Friction (CBSE Board)Friction (CBSE Board)
Friction (CBSE Board)
Pooja M
 
Introduction to Friction - Types and cause
Introduction to Friction - Types and causeIntroduction to Friction - Types and cause
Introduction to Friction - Types and cause
taruna25bhatia
 
gravity and friction ppt
gravity and friction pptgravity and friction ppt
gravity and friction ppt
hassanhamdy26
 
How do objects move
How do objects moveHow do objects move
How do objects move
safa-medaney
 
Science friction
Science frictionScience friction
Science friction
patilsachin4
 
Friction
FrictionFriction
How do objects move
How do objects moveHow do objects move
How do objects move
bassantnour
 
Force & Pressure
Force & PressureForce & Pressure
Force & Pressure
Abhijit Dhariya
 
How do objects move17 18
How do objects move17 18How do objects move17 18
How do objects move17 18
safa-medaney
 
frictiion ppt.pptx
frictiion ppt.pptxfrictiion ppt.pptx
frictiion ppt.pptx
YronneArsolon
 
frictiion-ppt.pptx
frictiion-ppt.pptxfrictiion-ppt.pptx
frictiion-ppt.pptx
PRASHANTKUMAR822901
 

Similar to FRICTION.pptx (20)

Friction
FrictionFriction
Friction
 
Ch.11.less.1.how are forces and motion related
Ch.11.less.1.how are forces and motion relatedCh.11.less.1.how are forces and motion related
Ch.11.less.1.how are forces and motion related
 
Ch 150407052236-conversion-gate01
Ch 150407052236-conversion-gate01Ch 150407052236-conversion-gate01
Ch 150407052236-conversion-gate01
 
Ch 150407052236-conversion-gate01
Ch 150407052236-conversion-gate01Ch 150407052236-conversion-gate01
Ch 150407052236-conversion-gate01
 
Ch.11.less.1.how are forces and motion related?
Ch.11.less.1.how are forces and motion related?Ch.11.less.1.how are forces and motion related?
Ch.11.less.1.how are forces and motion related?
 
Friction
FrictionFriction
Friction
 
Friction
FrictionFriction
Friction
 
3RD QUARTER SCIENCE 6 FRICTION01 PPT.pptx
3RD QUARTER SCIENCE 6 FRICTION01 PPT.pptx3RD QUARTER SCIENCE 6 FRICTION01 PPT.pptx
3RD QUARTER SCIENCE 6 FRICTION01 PPT.pptx
 
Friction
FrictionFriction
Friction
 
Friction (CBSE Board)
Friction (CBSE Board)Friction (CBSE Board)
Friction (CBSE Board)
 
Introduction to Friction - Types and cause
Introduction to Friction - Types and causeIntroduction to Friction - Types and cause
Introduction to Friction - Types and cause
 
gravity and friction ppt
gravity and friction pptgravity and friction ppt
gravity and friction ppt
 
How do objects move
How do objects moveHow do objects move
How do objects move
 
Science friction
Science frictionScience friction
Science friction
 
Friction
FrictionFriction
Friction
 
How do objects move
How do objects moveHow do objects move
How do objects move
 
Force & Pressure
Force & PressureForce & Pressure
Force & Pressure
 
How do objects move17 18
How do objects move17 18How do objects move17 18
How do objects move17 18
 
frictiion ppt.pptx
frictiion ppt.pptxfrictiion ppt.pptx
frictiion ppt.pptx
 
frictiion-ppt.pptx
frictiion-ppt.pptxfrictiion-ppt.pptx
frictiion-ppt.pptx
 

More from bushra274162

100 dua.pdf
100 dua.pdf100 dua.pdf
100 dua.pdf
bushra274162
 
الاذكار اليومية الشاملة - اردو.pdf
الاذكار اليومية الشاملة - اردو.pdfالاذكار اليومية الشاملة - اردو.pdf
الاذكار اليومية الشاملة - اردو.pdf
bushra274162
 
aasi ki duae.pdf
aasi ki duae.pdfaasi ki duae.pdf
aasi ki duae.pdf
bushra274162
 
Namaz k bad k masnon azkar.pdf
Namaz k bad k masnon azkar.pdfNamaz k bad k masnon azkar.pdf
Namaz k bad k masnon azkar.pdf
bushra274162
 
42 Astaghfar.pdf
42 Astaghfar.pdf42 Astaghfar.pdf
42 Astaghfar.pdf
bushra274162
 
ASTAGHFIRULLAH اَسْتَغْفـِرُ اللهَ.pdf
ASTAGHFIRULLAH  اَسْتَغْفـِرُ اللهَ.pdfASTAGHFIRULLAH  اَسْتَغْفـِرُ اللهَ.pdf
ASTAGHFIRULLAH اَسْتَغْفـِرُ اللهَ.pdf
bushra274162
 
بہت قیمتی دعاٸیں.pdf
بہت قیمتی دعاٸیں.pdfبہت قیمتی دعاٸیں.pdf
بہت قیمتی دعاٸیں.pdf
bushra274162
 
4_5812191796419105006.pdf
4_5812191796419105006.pdf4_5812191796419105006.pdf
4_5812191796419105006.pdf
bushra274162
 
Desktop, Icons & Wallpaper.ppt
Desktop, Icons & Wallpaper.pptDesktop, Icons & Wallpaper.ppt
Desktop, Icons & Wallpaper.ppt
bushra274162
 
08025813Sep2019wahidjamaclass4.docx
08025813Sep2019wahidjamaclass4.docx08025813Sep2019wahidjamaclass4.docx
08025813Sep2019wahidjamaclass4.docx
bushra274162
 
12455225Jan2020sardiyanzakhiraalfaz.pptx
12455225Jan2020sardiyanzakhiraalfaz.pptx12455225Jan2020sardiyanzakhiraalfaz.pptx
12455225Jan2020sardiyanzakhiraalfaz.pptx
bushra274162
 
19332425Jan2020AlfazMutzad.pptx
19332425Jan2020AlfazMutzad.pptx19332425Jan2020AlfazMutzad.pptx
19332425Jan2020AlfazMutzad.pptx
bushra274162
 
13232030Dec2019P1MSWordintro.pptx
13232030Dec2019P1MSWordintro.pptx13232030Dec2019P1MSWordintro.pptx
13232030Dec2019P1MSWordintro.pptx
bushra274162
 
MOTOR FUNCTIONS OF SPINAL CORD.pptx
MOTOR FUNCTIONS OF SPINAL CORD.pptxMOTOR FUNCTIONS OF SPINAL CORD.pptx
MOTOR FUNCTIONS OF SPINAL CORD.pptx
bushra274162
 
indices.ppt
indices.pptindices.ppt
indices.ppt
bushra274162
 
Circuit.pptx
Circuit.pptxCircuit.pptx
Circuit.pptx
bushra274162
 
digestive tract -maayer.pptx
digestive tract -maayer.pptxdigestive tract -maayer.pptx
digestive tract -maayer.pptx
bushra274162
 
Prefixes_LC.ppt
Prefixes_LC.pptPrefixes_LC.ppt
Prefixes_LC.ppt
bushra274162
 
Main Idea.pptx
Main Idea.pptxMain Idea.pptx
Main Idea.pptx
bushra274162
 
Black Beauty.pptx
Black Beauty.pptxBlack Beauty.pptx
Black Beauty.pptx
bushra274162
 

More from bushra274162 (20)

100 dua.pdf
100 dua.pdf100 dua.pdf
100 dua.pdf
 
الاذكار اليومية الشاملة - اردو.pdf
الاذكار اليومية الشاملة - اردو.pdfالاذكار اليومية الشاملة - اردو.pdf
الاذكار اليومية الشاملة - اردو.pdf
 
aasi ki duae.pdf
aasi ki duae.pdfaasi ki duae.pdf
aasi ki duae.pdf
 
Namaz k bad k masnon azkar.pdf
Namaz k bad k masnon azkar.pdfNamaz k bad k masnon azkar.pdf
Namaz k bad k masnon azkar.pdf
 
42 Astaghfar.pdf
42 Astaghfar.pdf42 Astaghfar.pdf
42 Astaghfar.pdf
 
ASTAGHFIRULLAH اَسْتَغْفـِرُ اللهَ.pdf
ASTAGHFIRULLAH  اَسْتَغْفـِرُ اللهَ.pdfASTAGHFIRULLAH  اَسْتَغْفـِرُ اللهَ.pdf
ASTAGHFIRULLAH اَسْتَغْفـِرُ اللهَ.pdf
 
بہت قیمتی دعاٸیں.pdf
بہت قیمتی دعاٸیں.pdfبہت قیمتی دعاٸیں.pdf
بہت قیمتی دعاٸیں.pdf
 
4_5812191796419105006.pdf
4_5812191796419105006.pdf4_5812191796419105006.pdf
4_5812191796419105006.pdf
 
Desktop, Icons & Wallpaper.ppt
Desktop, Icons & Wallpaper.pptDesktop, Icons & Wallpaper.ppt
Desktop, Icons & Wallpaper.ppt
 
08025813Sep2019wahidjamaclass4.docx
08025813Sep2019wahidjamaclass4.docx08025813Sep2019wahidjamaclass4.docx
08025813Sep2019wahidjamaclass4.docx
 
12455225Jan2020sardiyanzakhiraalfaz.pptx
12455225Jan2020sardiyanzakhiraalfaz.pptx12455225Jan2020sardiyanzakhiraalfaz.pptx
12455225Jan2020sardiyanzakhiraalfaz.pptx
 
19332425Jan2020AlfazMutzad.pptx
19332425Jan2020AlfazMutzad.pptx19332425Jan2020AlfazMutzad.pptx
19332425Jan2020AlfazMutzad.pptx
 
13232030Dec2019P1MSWordintro.pptx
13232030Dec2019P1MSWordintro.pptx13232030Dec2019P1MSWordintro.pptx
13232030Dec2019P1MSWordintro.pptx
 
MOTOR FUNCTIONS OF SPINAL CORD.pptx
MOTOR FUNCTIONS OF SPINAL CORD.pptxMOTOR FUNCTIONS OF SPINAL CORD.pptx
MOTOR FUNCTIONS OF SPINAL CORD.pptx
 
indices.ppt
indices.pptindices.ppt
indices.ppt
 
Circuit.pptx
Circuit.pptxCircuit.pptx
Circuit.pptx
 
digestive tract -maayer.pptx
digestive tract -maayer.pptxdigestive tract -maayer.pptx
digestive tract -maayer.pptx
 
Prefixes_LC.ppt
Prefixes_LC.pptPrefixes_LC.ppt
Prefixes_LC.ppt
 
Main Idea.pptx
Main Idea.pptxMain Idea.pptx
Main Idea.pptx
 
Black Beauty.pptx
Black Beauty.pptxBlack Beauty.pptx
Black Beauty.pptx
 

Recently uploaded

2 Post harvest Physiology of Horticulture produce.pptx
2 Post harvest Physiology of Horticulture  produce.pptx2 Post harvest Physiology of Horticulture  produce.pptx
2 Post harvest Physiology of Horticulture produce.pptx
UmeshTimilsina1
 
BÀI TẬP BỔ TRỢ 4 KỸ NĂNG TIẾNG ANH LỚP 12 - GLOBAL SUCCESS - FORM MỚI 2025 - ...
BÀI TẬP BỔ TRỢ 4 KỸ NĂNG TIẾNG ANH LỚP 12 - GLOBAL SUCCESS - FORM MỚI 2025 - ...BÀI TẬP BỔ TRỢ 4 KỸ NĂNG TIẾNG ANH LỚP 12 - GLOBAL SUCCESS - FORM MỚI 2025 - ...
BÀI TẬP BỔ TRỢ 4 KỸ NĂNG TIẾNG ANH LỚP 12 - GLOBAL SUCCESS - FORM MỚI 2025 - ...
Nguyen Thanh Tu Collection
 
ASP.NET Core Interview Questions PDF By ScholarHat.pdf
ASP.NET Core Interview Questions PDF By ScholarHat.pdfASP.NET Core Interview Questions PDF By ScholarHat.pdf
ASP.NET Core Interview Questions PDF By ScholarHat.pdf
Scholarhat
 
Codeavour 5.0 International Impact Report - The Biggest International AI, Cod...
Codeavour 5.0 International Impact Report - The Biggest International AI, Cod...Codeavour 5.0 International Impact Report - The Biggest International AI, Cod...
Codeavour 5.0 International Impact Report - The Biggest International AI, Cod...
Codeavour International
 
New Features in Odoo 17 Sign - Odoo 17 Slides
New Features in Odoo 17 Sign - Odoo 17 SlidesNew Features in Odoo 17 Sign - Odoo 17 Slides
New Features in Odoo 17 Sign - Odoo 17 Slides
Celine George
 
How to Manage Shipping Connectors & Shipping Methods in Odoo 17
How to Manage Shipping Connectors & Shipping Methods in Odoo 17How to Manage Shipping Connectors & Shipping Methods in Odoo 17
How to Manage Shipping Connectors & Shipping Methods in Odoo 17
Celine George
 
Our Guide to the July 2024 USPS® Rate Change
Our Guide to the July 2024 USPS® Rate ChangeOur Guide to the July 2024 USPS® Rate Change
Our Guide to the July 2024 USPS® Rate Change
Postal Advocate Inc.
 
MATATAG CURRICULUM sample lesson exemplar.docx
MATATAG CURRICULUM sample lesson exemplar.docxMATATAG CURRICULUM sample lesson exemplar.docx
MATATAG CURRICULUM sample lesson exemplar.docx
yardenmendoza
 
Mail Server Configuration Using App passwords in Odoo 17
Mail Server Configuration Using App passwords in Odoo 17Mail Server Configuration Using App passwords in Odoo 17
Mail Server Configuration Using App passwords in Odoo 17
Celine George
 
How to Empty a One2Many Field in Odoo 17
How to Empty a One2Many Field in Odoo 17How to Empty a One2Many Field in Odoo 17
How to Empty a One2Many Field in Odoo 17
Celine George
 
MVC Interview Questions PDF By ScholarHat
MVC Interview Questions PDF By ScholarHatMVC Interview Questions PDF By ScholarHat
MVC Interview Questions PDF By ScholarHat
Scholarhat
 
1. Importance_of_reducing_postharvest_loss.pptx
1. Importance_of_reducing_postharvest_loss.pptx1. Importance_of_reducing_postharvest_loss.pptx
1. Importance_of_reducing_postharvest_loss.pptx
UmeshTimilsina1
 
E-learning Odoo 17 New features - Odoo 17 Slides
E-learning Odoo 17  New features - Odoo 17 SlidesE-learning Odoo 17  New features - Odoo 17 Slides
E-learning Odoo 17 New features - Odoo 17 Slides
Celine George
 
How to Manage Line Discount in Odoo 17 POS
How to Manage Line Discount in Odoo 17 POSHow to Manage Line Discount in Odoo 17 POS
How to Manage Line Discount in Odoo 17 POS
Celine George
 
Odoo 17 Events - Attendees List Scanning
Odoo 17 Events - Attendees List ScanningOdoo 17 Events - Attendees List Scanning
Odoo 17 Events - Attendees List Scanning
Celine George
 
A beginner’s guide to project reviews - everything you wanted to know but wer...
A beginner’s guide to project reviews - everything you wanted to know but wer...A beginner’s guide to project reviews - everything you wanted to know but wer...
A beginner’s guide to project reviews - everything you wanted to know but wer...
Association for Project Management
 
Benchmarking Sustainability: Neurosciences and AI Tech Research in Macau - Ke...
Benchmarking Sustainability: Neurosciences and AI Tech Research in Macau - Ke...Benchmarking Sustainability: Neurosciences and AI Tech Research in Macau - Ke...
Benchmarking Sustainability: Neurosciences and AI Tech Research in Macau - Ke...
Alvaro Barbosa
 
Introduction to Google Productivity Tools for Office and Personal Use
Introduction to Google Productivity Tools for Office and Personal UseIntroduction to Google Productivity Tools for Office and Personal Use
Introduction to Google Productivity Tools for Office and Personal Use
Excellence Foundation for South Sudan
 
How to Manage Early Receipt Printing in Odoo 17 POS
How to Manage Early Receipt Printing in Odoo 17 POSHow to Manage Early Receipt Printing in Odoo 17 POS
How to Manage Early Receipt Printing in Odoo 17 POS
Celine George
 
Genetics Teaching Plan: Dr.Kshirsagar R.V.
Genetics Teaching Plan: Dr.Kshirsagar R.V.Genetics Teaching Plan: Dr.Kshirsagar R.V.
Genetics Teaching Plan: Dr.Kshirsagar R.V.
DrRavindrakshirsagar1
 

Recently uploaded (20)

2 Post harvest Physiology of Horticulture produce.pptx
2 Post harvest Physiology of Horticulture  produce.pptx2 Post harvest Physiology of Horticulture  produce.pptx
2 Post harvest Physiology of Horticulture produce.pptx
 
BÀI TẬP BỔ TRỢ 4 KỸ NĂNG TIẾNG ANH LỚP 12 - GLOBAL SUCCESS - FORM MỚI 2025 - ...
BÀI TẬP BỔ TRỢ 4 KỸ NĂNG TIẾNG ANH LỚP 12 - GLOBAL SUCCESS - FORM MỚI 2025 - ...BÀI TẬP BỔ TRỢ 4 KỸ NĂNG TIẾNG ANH LỚP 12 - GLOBAL SUCCESS - FORM MỚI 2025 - ...
BÀI TẬP BỔ TRỢ 4 KỸ NĂNG TIẾNG ANH LỚP 12 - GLOBAL SUCCESS - FORM MỚI 2025 - ...
 
ASP.NET Core Interview Questions PDF By ScholarHat.pdf
ASP.NET Core Interview Questions PDF By ScholarHat.pdfASP.NET Core Interview Questions PDF By ScholarHat.pdf
ASP.NET Core Interview Questions PDF By ScholarHat.pdf
 
Codeavour 5.0 International Impact Report - The Biggest International AI, Cod...
Codeavour 5.0 International Impact Report - The Biggest International AI, Cod...Codeavour 5.0 International Impact Report - The Biggest International AI, Cod...
Codeavour 5.0 International Impact Report - The Biggest International AI, Cod...
 
New Features in Odoo 17 Sign - Odoo 17 Slides
New Features in Odoo 17 Sign - Odoo 17 SlidesNew Features in Odoo 17 Sign - Odoo 17 Slides
New Features in Odoo 17 Sign - Odoo 17 Slides
 
How to Manage Shipping Connectors & Shipping Methods in Odoo 17
How to Manage Shipping Connectors & Shipping Methods in Odoo 17How to Manage Shipping Connectors & Shipping Methods in Odoo 17
How to Manage Shipping Connectors & Shipping Methods in Odoo 17
 
Our Guide to the July 2024 USPS® Rate Change
Our Guide to the July 2024 USPS® Rate ChangeOur Guide to the July 2024 USPS® Rate Change
Our Guide to the July 2024 USPS® Rate Change
 
MATATAG CURRICULUM sample lesson exemplar.docx
MATATAG CURRICULUM sample lesson exemplar.docxMATATAG CURRICULUM sample lesson exemplar.docx
MATATAG CURRICULUM sample lesson exemplar.docx
 
Mail Server Configuration Using App passwords in Odoo 17
Mail Server Configuration Using App passwords in Odoo 17Mail Server Configuration Using App passwords in Odoo 17
Mail Server Configuration Using App passwords in Odoo 17
 
How to Empty a One2Many Field in Odoo 17
How to Empty a One2Many Field in Odoo 17How to Empty a One2Many Field in Odoo 17
How to Empty a One2Many Field in Odoo 17
 
MVC Interview Questions PDF By ScholarHat
MVC Interview Questions PDF By ScholarHatMVC Interview Questions PDF By ScholarHat
MVC Interview Questions PDF By ScholarHat
 
1. Importance_of_reducing_postharvest_loss.pptx
1. Importance_of_reducing_postharvest_loss.pptx1. Importance_of_reducing_postharvest_loss.pptx
1. Importance_of_reducing_postharvest_loss.pptx
 
E-learning Odoo 17 New features - Odoo 17 Slides
E-learning Odoo 17  New features - Odoo 17 SlidesE-learning Odoo 17  New features - Odoo 17 Slides
E-learning Odoo 17 New features - Odoo 17 Slides
 
How to Manage Line Discount in Odoo 17 POS
How to Manage Line Discount in Odoo 17 POSHow to Manage Line Discount in Odoo 17 POS
How to Manage Line Discount in Odoo 17 POS
 
Odoo 17 Events - Attendees List Scanning
Odoo 17 Events - Attendees List ScanningOdoo 17 Events - Attendees List Scanning
Odoo 17 Events - Attendees List Scanning
 
A beginner’s guide to project reviews - everything you wanted to know but wer...
A beginner’s guide to project reviews - everything you wanted to know but wer...A beginner’s guide to project reviews - everything you wanted to know but wer...
A beginner’s guide to project reviews - everything you wanted to know but wer...
 
Benchmarking Sustainability: Neurosciences and AI Tech Research in Macau - Ke...
Benchmarking Sustainability: Neurosciences and AI Tech Research in Macau - Ke...Benchmarking Sustainability: Neurosciences and AI Tech Research in Macau - Ke...
Benchmarking Sustainability: Neurosciences and AI Tech Research in Macau - Ke...
 
Introduction to Google Productivity Tools for Office and Personal Use
Introduction to Google Productivity Tools for Office and Personal UseIntroduction to Google Productivity Tools for Office and Personal Use
Introduction to Google Productivity Tools for Office and Personal Use
 
How to Manage Early Receipt Printing in Odoo 17 POS
How to Manage Early Receipt Printing in Odoo 17 POSHow to Manage Early Receipt Printing in Odoo 17 POS
How to Manage Early Receipt Printing in Odoo 17 POS
 
Genetics Teaching Plan: Dr.Kshirsagar R.V.
Genetics Teaching Plan: Dr.Kshirsagar R.V.Genetics Teaching Plan: Dr.Kshirsagar R.V.
Genetics Teaching Plan: Dr.Kshirsagar R.V.
 

FRICTION.pptx

  • 2. Forces: Friction Friction is a force that opposes motion between two surfaces.
  • 3. Forces: Friction Friction occurs because the surface of any object is rough. Even surfaces that feel smooth are covered with microscopic hills and valleys.
  • 4. Forces: Friction When two surfaces are in contact, the hills and valleys of one surface stick to the hills and valleys of the other surface.
  • 5. Friction Factors The amount of friction depends on these 2 factors: 1. Roughness of the surfaces/texture 2. The force pushing the surfaces together.
  • 6. Will the tube roll less over a smoother surface or a rougher surface? Why? Smooth Surface Rough Surface The rougher surface because there are more hills and valleys and the valleys are deeper.
  • 7. Which has more friction and why? 100 pounds The 100 pound box because the force pushing together is higher so the hills and valleys are in closer contact. 40 pounds
  • 8. Friction Factors 1. Roughness – The rougher the surface, the more hills and valleys there are and the greater the friction. 2. Force pushing together/weight – Force is increased, the hills and valleys will be in closer contact and friction will increase.
  • 9. Amount of Surface Area in fluids • The amount of surface area affects the friction between objects in liquids and gases. Example: Swimming
  • 10. Types of Friction 1. Sliding 2. Fluid 3. Rolling 4. Static
  • 11. Sliding Friction • Sliding friction is a friction force that opposes the direction of motion of an object that occurs when solid surfaces slide over one another. • Examples: • Writing – pencil point and paper • Combing your hair – surface of comb and strands of hair
  • 12. Fluid Friction • The force that tries to slow objects down when they move through a liquid or a gas. It's also known as "drag", or "air resistance". • All gases and liquids are fluids. • Fluid Friction increases as the speed of the object increases. • An airplane and a swimmer both experience fluid friction.
  • 13. Rolling Friction • Rolling friction is friction that occurs between surfaces in motion that are rolling in which one of the surfaces is a wheel, roller, or ball. • Examples: • Riding a bike – tires and ground • Bowling – ball and lane
  • 14. Static Friction • Static friction is friction that occurs when the surfaces in contact are at rest (not in motion). • Examples: • A book resting on a desk. • A potted plant sitting on a sidewalk.
  • 15. Ways to Reduce Friction • Smooth the surface – less hills and valleys and not as deep. • Replace sliding with rolling (Use Wheels) • Add a lubricant like oil, wax, or grease – Fills in the hills and valleys. • Less force pushing together – The hills and valleys are not pushed together as hard so they have less contact.
  • 16. Ways to Increase Friction • Rough the surface – more hills and valleys • Replace rolling with sliding • More force pushing together – The hills and valleys are pushed together harder so the hills and valleys are in closer contact.
  • 17. Friction Song •What is friction? •Friction Video
  • 18. Glass Forces: Friction Surfaces that may cause more friction. Sandpaper Carpet Gravel ICE Tile Surfaces that may cause less friction
  • 19. Forces: Friction Friction is both harmful and helpful.