Question

What is friction state types of friction state law of friction class11?

Answer 1

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

Type of Friction:-

1)Dry friction.

2) Fluid friction

3)Skin Friction

4) Internal Friction.

5)Lubricated friction.

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Answer 2

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Friction

➡ resistanceresistance to motion experienced when two surfaces in contact move with respect to each other is called fraction.

Types of friction

1. sliding friction
2. rolling friction
3. fluid friction

• Sliding friction - the frictional force offered when sliding an object is called sliding friction.. for for example of box riding on a surface.
• Rolling friction- the frictional force of organ rolling and object is called rolling friction for example a ball rolling on a surface.
• Fluid friction - the force of friction due to air and water and other Fluids is called fluid friction...

Laws of friction

1. When when an object is moving,the friction is proportional and perpendicular to the normal force.
2. Friction is independent of the area of contact so long as there is an area of contact.
3. The coefficient of static friction is slightly greater than the coefficient of kinetic friction..
4. Within reather large limits , kinetic frictionis independent of velocity.
5. Friction friction depends upon the nature of the surfaces is contact..

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