Question

state the types of friction ?
and explain the types ?

No Google answers ☠☠☠
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Answer 1

Answer:

Types of Friction

Static Friction: The frictional force that comes into play when a body starts sliding over another body. It opposes the impending motion of body.

• Impending motion is the motion that would take place in future.

so static friction only comes in play when a body starts sliding over the surface. when it is at rest there is no such frictional force. It is also called sliding friction.

Limiting friction : The maximum value of static friction that can come into play when a body is about to move.

$F = u_{s}N$

Here u is the coefficient of static friction and N is the Normal force equal but opposite to weight force.

Kinetic Friction : The frictional force that opposes the relative motion of an object when the object is already in motion.

kinetic friction is usually less than static friction.

$F = u_{k}N$

• Rolling Friction : A special case of kinetic friction when body is in rolling motion.

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Answer 2

Explanation:

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Friction is the force that opposes motion between any surfaces that are in contact. There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. ... Fluid friction occurs in fluids, which are liquids or gases.