Q16.what is friction? discuss about its type with examples.( 5 marks, long answer)
Answers
Answer:
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
Static Friction -
Static friction is defined as the frictional force that acts between the surfaces when they are at rest with respect to each other.
Following are the examples of static friction:
Skiing against the snow
Creating heat by rubbing both the hands together
Table lamp resting on the table
Rolling Friction -
Rolling friction is defined as the force which resists the motion of a ball or wheel and is the weakest types of friction.
Following are the examples of rolling friction:
Rolling of the log on the ground
Wheels of the moving vehicles
Sliding Friction -
Sliding friction is defined as the resistance that is created between any two objects when they are sliding against each other.
Following are the examples of sliding friction:
Sliding of the block across the floor
Two cards sliding against each other in a deck.
Fluid Friction -
Fluid friction is defined as the friction that exists between the layers of the fluid when they are moving relative to each other.
Examples Of Fluid Friction
Following are the examples of fluid friction:
The flow of ink in pens
Swimming
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