Question

Dinfine friction and explain types of friction with example​

Answer 1

Answer:

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.......

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Answer 2

Answer:

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

There are four types of friction:

1.Static Friction:Static friction is a force that keeps an object at rest. Static friction definition can be written as:

The friction experienced when individuals try to move a stationary object on a surface, without actually triggering any relative motion between the body and the surface which it is on.

Example:Papers on a tabletop,A towel hanging on a rack

2.Sliding Friction:The term sliding friction refers to the resistance created by two objects sliding against each other. This can also be called kinetic friction. Sliding friction is intended to stop an object from moving.

Example:Rubbing both hands together to create heat,A sled sliding across snow or ice

3.Rolling Friction:The force resisting the motion of a rolling body on a surface is known as rolling friction or rolling resistance.

Example:A basketball rolled on the court will eventually come to a halt because of rolling friction,A bike with a broad tire will burn more fuel because of the increased rolling friction.

4.Fluid Friction:Fluid friction is the force that resists motion either within the fluid itself or of another medium moving through the fluid. There is internal friction, which is a result of the interactions between molecules of the fluid, and there is external friction, which refers to how a fluid interacts with other matter.

Example:If there is a wet surface between two thin glass plates, you will notice that plates get stuck and the bottom plate doesn’t fall when you hold only the top one,When any object is dropped in a fluid, the extent of the splash is depended on the fluid friction of that particular fluid.