Class 8 Exam > Class 8 Videos > Types of Friction - Friction, Class 8 Science
Types of Friction - Friction, Class 8 Science Video Lecture
FAQs on Types of Friction - Friction, Class 8 Science Video Lecture
| 1. What is friction? |  |
Ans. Friction is a force that opposes the relative motion between two surfaces in contact. It acts in the opposite direction to the applied force and can be described as the resistance encountered when one object moves over another.
| 2. What are the different types of friction? | |
Ans. There are mainly four types of friction: static friction, sliding friction, rolling friction, and fluid friction. Static friction occurs when two surfaces are at rest and trying to move. Sliding friction occurs when two surfaces slide against each other. Rolling friction occurs when an object rolls over a surface. Fluid friction occurs when an object moves through a fluid, like air or water.
| 3. How does friction affect the motion of objects? | |
Ans. Friction can either help or hinder the motion of objects. It can help by providing the necessary grip to walk, drive a car, or hold objects. On the other hand, friction can hinder motion by reducing the speed of moving objects or causing wear and tear of surfaces in contact. The amount of friction depends on the roughness of the surfaces and the force pressing them together.
| 4. Can friction be reduced? | |
Ans. Yes, friction can be reduced by using lubricants, such as oil or grease, between the surfaces in contact. Lubricants create a thin layer that separates the surfaces and reduces the frictional forces. Additionally, using smoother surfaces or adding wheels can also minimize friction.
| 5. What are some everyday examples of friction? | |
Ans. Friction is encountered in various everyday activities. Some examples include walking or running (where friction between the shoes and the ground helps us move), writing with a pencil (where friction between the pencil and paper creates marks), and driving a car (where friction between the tires and the road allows for control and stopping).
Text Transcript from Video
types of friction
introduction we do activities like
walking running and playing and in all
these activities fiction play an
important role you must have seen people
skiing on snow an interesting sport that
needs balancing and knowledge of
frictional force do you know that
frictional forces can be classified
based on its features let us find out
the various types of frictional force
objectives at the end of this lesson you
will be able to describe the types of
friction discuss advantages and
disadvantages of friction illustrate the
way to reduce or increase the friction
friction can be classified into four
types static friction sliding friction
rolling friction and fluid friction the
ball on ground is at rest at this point
static friction is acting on it the
frictional force that exists between the
two surfaces so long as they are
relatively at rest when an external
force acts is called static friction
there is no actual movement of the body
in static friction in static friction
force of static friction is equal to the
applied force static friction ends with
the beginning of sliding of the object
and Trust when we push the ball it
starts moving the frictional force
present when one body moves slowly or
slides over another body is known as
sliding friction once our body slides
the sliding friction is reduced a little
it is less than the static friction in
sliding friction the force of sliding
friction is equal to the constant pull
force you must have seen attaches and
other pieces of luggage fitted with
rollers if when a child can pull such
pieces of luggage
why is it so let us find out the rollers
reduce friction and roll on the objects
on rollers it is always easier to roll
than to slide a body over another that
is the reason it is convenient to pull
the luggages fitted with rollers the
force of friction between the rollers on
a body and the surface is called the
rolling friction rolling friction is
much less than the sliding friction
since the rolling friction is smaller
than the sliding friction sliding is
replaced in most machines by rolling by
the use of ball bearings common examples
are the use of ball bearings between
hubs and the axles of ceiling fans and
bicycles
introduction we do activities like
walking running and playing and in all
these activities fiction play an
important role you must have seen people
skiing on snow an interesting sport that
needs balancing and knowledge of
frictional force do you know that
frictional forces can be classified
based on its features let us find out
the various types of frictional force
objectives at the end of this lesson you
will be able to describe the types of
friction discuss advantages and
disadvantages of friction illustrate the
way to reduce or increase the friction
friction can be classified into four
types static friction sliding friction
rolling friction and fluid friction the
ball on ground is at rest at this point
static friction is acting on it the
frictional force that exists between the
two surfaces so long as they are
relatively at rest when an external
force acts is called static friction
there is no actual movement of the body
in static friction in static friction
force of static friction is equal to the
applied force static friction ends with
the beginning of sliding of the object
and Trust when we push the ball it
starts moving the frictional force
present when one body moves slowly or
slides over another body is known as
sliding friction once our body slides
the sliding friction is reduced a little
it is less than the static friction in
sliding friction the force of sliding
friction is equal to the constant pull
force you must have seen attaches and
other pieces of luggage fitted with
rollers if when a child can pull such
pieces of luggage
why is it so let us find out the rollers
reduce friction and roll on the objects
on rollers it is always easier to roll
than to slide a body over another that
is the reason it is convenient to pull
the luggages fitted with rollers the
force of friction between the rollers on
a body and the surface is called the
rolling friction rolling friction is
much less than the sliding friction
since the rolling friction is smaller
than the sliding friction sliding is
replaced in most machines by rolling by
the use of ball bearings common examples
are the use of ball bearings between
hubs and the axles of ceiling fans and
bicycles
Related Exams
About this Video
|
1.2K Views |
|
4.89/5 Rating |
|
Nov 29, 2024 Last updated |
Types of Friction - Friction, Class 8 Science for Class 82024 is part of Class 8 preparation. The notes and questions for Types of Friction - Friction, Class 8 Science
have been prepared according to the Class 8 exam syllabus. Information about Types of Friction - Friction, Class 8 Science covers all important topics
for Class 82024 Exam. Find important definitions, questions, notes, meanings, examples, exercises
and tests below for Types of Friction - Friction, Class 8 Science.
Introduction of Types of Friction - Friction, Class 8 Science in English is available as part of our Class 8 preparation & Types of Friction - Friction, Class 8 Science in Hindi
for Class 8 courses. Download more important topics, notes, lectures and mock test series for Class 8 Exam by
signing up for free.
Description
Video Lecture & Questions for Types of Friction - Friction, Class 8 Science Video Lecture - Class 8 full syllabus preparation | Free video for Class 8 exam.
Information about Types of Friction - Friction, Class 8 Science
Here you can find the Types of Friction - Friction, Class 8 Science defined & explained in the simplest way possible. Besides explaining types of Types of Friction - Friction, Class 8 Science
theory, EduRev gives you an ample number of questions to practice Types of Friction - Friction, Class 8 Science tests, examples and also practice Class 8 tests.
|
Explore Courses for Class 8 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Summary
,Exam
,past year papers
,Class 8 Science Video Lecture
,Class 8 Science Video Lecture
,Important questions
,mock tests for examination
,video lectures
,Viva Questions
,MCQs
,study material
,Types of Friction - Friction
,Types of Friction - Friction
,Sample Paper
,Free
,shortcuts and tricks
,ppt
,Previous Year Questions with Solutions
,Objective type Questions
,Types of Friction - Friction
,practice quizzes
,Class 8 Science Video Lecture
,Semester Notes
,Extra Questions
;
Study Types of Friction - Friction, Class 8 Science on the App
Students of Class 8 can study Types of Friction - Friction, Class 8 Science alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Types of Friction - Friction, Class 8 Science,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Types of Friction - Friction, Class 8 Science is prepared as per the latest Class 8 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup