Question

what is friction? how many types of friction.
​

Answer 1

Answer:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact

Explanation:

four types

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 liquids and gases. All four types of friction are described below

Answer 2

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. With the increase in relative speeds, the sliding friction reduces whereas fluid friction increases with the increase in the relative speed, also fluid friction is dependent on the viscosity of the fluid.

Types Of Friction

Following are the friction types which depend on the types of motion:

• Static Friction
• Sliding Friction
• Rolling Friction
• Fluid Friction

Static friction is defined as the frictional force that acts between the surfaces when they are at rest with respect to each other.

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

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

Fluid friction is defined as the friction that exists between the layers of the fluid when they are moving relative to each other.

${ \huge\rm \pink {H}\rm \blue {A} \rm \purple {N}\ \rm \green{J} \rm\red {U}\ \rm \orange {H} \rm{U} \rm \gray{I}}$