FRICTION. Friction A force that acts in a direction opposite to the motion Will cause a moving...
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Transcript of FRICTION. Friction A force that acts in a direction opposite to the motion Will cause a moving...
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FRICTION
FRICTION
![Page 2: FRICTION. Friction A force that acts in a direction opposite to the motion Will cause a moving object to slow down and finally stop.](https://reader036.fdocuments.in/reader036/viewer/2022062411/5697bf771a28abf838c8150f/html5/thumbnails/2.jpg)
Friction
A force that acts in a direction opposite to the motion
Will cause a moving object to slow down and finally stop
![Page 3: FRICTION. Friction A force that acts in a direction opposite to the motion Will cause a moving object to slow down and finally stop.](https://reader036.fdocuments.in/reader036/viewer/2022062411/5697bf771a28abf838c8150f/html5/thumbnails/3.jpg)
Source of Friction
Friction occurs because the surface of any object is rough.
Even surfaces that appear smooth cause friction.
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Rougher Surfaces
The rougher the surface, the greater the friction.
Example: Pavement is much rougher than grass, more friction is produced when you slide on the pavement than on grass.
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Mass and Friction
Objects with more mass need more force to overcome friction, objects with less mass need less force to overcome friction.
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Types of Friction
Sliding Friction- occurs when two solid surfaces slide over each other.
Example: When you go sledding, or apply the brakes on a bicycle or car.
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Types of Friction
Rolling Friction- occurs when an object rolls across a surface.
Makes objects easier to move than with sliding friction.
Example: Anything with wheels uses rolling friction.
![Page 8: FRICTION. Friction A force that acts in a direction opposite to the motion Will cause a moving object to slow down and finally stop.](https://reader036.fdocuments.in/reader036/viewer/2022062411/5697bf771a28abf838c8150f/html5/thumbnails/8.jpg)
Types of Friction
Fluid Friction – occurs when a solid object moves through a fluid.
Fluids include liquids and gases.
Example: The friction between air and a fast moving car is the largest force opposing the motion of the car.
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Static Friction
Static Friction is when a force is applied to the object but the object does not move.
Static friction disappears as soon as the object moves.