Question

define force of friction. Write types of friction.​

Answer 1

Friction is defined as the force that opposes the motion of a solid object over another. There are mainly four types of friction: static friction, sliding friction, rolling friction, and fluid friction. ... Similarly, if VR < VL then the point B tends to move forward and hence the friction acts in the backward direction.

Answer 2

Answer:

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Friction:

• Friction is defined as the force that opposes the motion of a solid object over another.
• There are mainly four types of friction: static friction, sliding friction, rolling friction, and fluid friction.
• Friction and normal force are directly proportional to the contacting surfaces and it doesn’t depend on the hardness of the contacting surface.

Types:

1. Static friction

the frictional force that acts between the surfaces when they are at rest with respect to each other.

2. Sliding friction

the resistance that is created between any two objects when they are sliding against each other.

3. Rolling friction

the force which resists the motion of a ball or wheel and is the weakest types of friction.

4. Fluid friction

the friction that exsits between the layers of the fluid when they are moving relative to each other.

I hope it helps u.......