Physics, asked by gangpuramaruna6, 1 month ago

explain the types of frication with suitable examples
andwer

Answers

Answered by dishathapak

Answer:

There are four primary forms of friction. The first two are very similar and depend on the state of the object in question.

Static Friction:- This state of friction is applied between two objects when they have been in contact for a long time and have no relative motion between them. Static friction is applied due to cold welding between the two surfaces of contact.

( image first )

Example:- towel hanging on a rack.

Sliding Friction(Kinetic Friction):- This state of friction is applied between two objects when they have relative motion between them. Kinetic friction's magnitude is always less than or equal to that of the magnitude of the maximum static friction. Kinetic friction is always applied to reduce the relative motion, or it is applied opposite to the direction of relative motion.

( image 2 )

Example:- A coaster sliding against a table.

Rolling Friction:- This state of friction is applied between two objects when at least one of the objects undergo rolling motion. Rolling friction is always applied in the opposite direction of the relative motion. So in this case too the friction is applied in the opposite direction to the rotation. Thus the friction is applied in the same direction as the motion of the rolling object. (Only in real scenario there is a depression in the object thus there is a friction applied in the opposite direction to the direction of motion.)

( image 3 )

Example:- truck tires.

Fluid friction:- There is a friction whenever an object moves through a fluid.It is called fluid friction. Air is very light and thin, yet it exerts frictional force on objects moving through it. When an object moves through the air ,it pushes the air out of the way and air pushes back on the object.