Friction an overview by https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh Made with a curious mind en-us 2020-09-08 06:46:39 UTC 2024-02-20 13:56:28 UTC hello@padlet.com Friction prekshavishnu https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726298426 Hii dear students today we are going to discuss about new concept. ]]> 2020-09-08 06:47:34 UTC https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726298426 An example prekshavishnu https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726299429 For example, when you try to push a book along the floor, friction makes this difficult.

When we try to move a body by applying a force parallel to their surfaces, an opposing  force is experienced. ]]> 2020-09-08 06:48:07 UTC https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726299429 Concept prekshavishnu https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726302380
Didn't you notice the figure?
 Forces can affect your running greatly. Forces can slow you down, speed you up and can even bring you pain if you do understand whats happening. 
 What may be the reason??
 When you are running the most important force that you should understand is friction.
Friction is a force that opposes movement between two objects, but for runners friction makes you faster.

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When a body moves or tends to move on the surface of another body,  a forcevis experienced parallel to the surface which opposes the relative motion between them. This is friction. 

]]> 2020-09-08 06:51:19 UTC https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726305334 Types of Friction prekshavishnu https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726308682 https://youtu.be/9XtGJXVnQxk

 For a moving solid body, there are two principal types of friction that act upon it:


The force resisting the motion of a rolling body on a surface is known as rolling friction or rolling resistance. Rolling of ball or wheel on the ground is an example of Rolling friction. 


The other type of friction is sliding friction. In this type of friction, there is a restriction on the body’s movement as only one side of the body is in contact with the surface. Pushing a box across the table is an example of Sliding friction. 

]]> 2020-09-08 06:53:11 UTC https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726308682 Advantages prekshavishnu https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726311767 •Friction enables us to walk freely.
• It helps to support ladder against wall.
• It becomes possible to transfer one form of energy to another.
• Objects can be piled up without slipping.
• Breaks of vehicles work due to friction.
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]]> 2020-09-08 06:54:38 UTC https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726311767 Disadvantages prekshavishnu https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726313421 •It always resists the motion, so extra energy is required to overcome it.
• It causes wear and tear of machines.
• It decreases the life expectancy of moving parts of vehicles.
• Fuel loss
•]]> 2020-09-08 06:55:33 UTC https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726313421 Activity.... prekshavishnu https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726315106 Find more situtions and expand it....
You might have understood the advantages and disadvantages of friction. 
What are the different methods to reduce friction??
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Observe the picture below and find more methods..]]> 2020-09-08 06:56:23 UTC https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726315106 Summary of the concept prekshavishnu https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726338985 https://youtu.be/M8LlytVuABA]]> 2020-09-08 07:09:38 UTC https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726338985 Self assessment prekshavishnu https://padlet.com/prekshavishnu/xljw2qjfrxss4fhh/wish/726404916 Fill in the blanks.

(a) Friction opposes the _____________ between the surfaces in contact with each other.

(b) Friction depends on the _____________ of surfaces.

(c) Friction produces __________.

(d) Sprinkling of powder on the carrom board ________ friction.

(e) Sliding friction is ___________ than the static friction.

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