Question

what kinds of fricition and example

Answer 1

Rubbing or bringing two objects in contact is known as friction.
Ex : Rubbing of your hands
A child playing with a slide.
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Answer 2

Generally there are 4 types of friction they are Static friction, Sliding friction, Rolling friction, Fluid friction.

STATIC FRICTION

Static friction exists between a stationary object and the surface on which it is resting.It prevents an object from moving against the surface.

Examples: static friction prevents an object like book falling from the desk even if the desk is slightly tilted, it helps us to pick up an object without slipping through our fingers.

SLIDING FRICTION

Sliding friction occurs between objects as the slide against each other.It acts in the direction opposite to the direction of motion.It prevents the object from moving too fast.It is also called as kinetic friction.

Examples: A book sliding from an inclined desk, A kid sliding on a slide.

ROLLING FRICTION

Rolling friction hinders the motion of an object rolling on a surface, that means it slows down the motion of an object rolling on a surface.

Examples: It slows down a ball rolling on a surface and it slows down the motion of tire rolling on the surface.

FLUID FRICTION

Fluid friction is experienced by the objects moving through a fluid.Fluid friction acts between the object and the fluid through which it is moving.

Examples: It slow downs the motion of airplane flying in the air