define friction ?
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Answers
Define friction :-
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.
In physics :-
Frictional force refers to the force generated by two surfaces that contacts and slide against each other. A few factors affecting the frictional force: These forces are mainly affected by the surface texture and amount of force impelling them together.
Si unit :-
Newton
Like all forces, the unit for friction is the Newton, which is equal to 1 kg.
Directions :-
Friction when an object slides along a surface. Direction is opposite the object's sliding direction and is parallel to the contact surface. Friction that prevents an object from sliding along a surface. Direction stops the object from sliding against another surface and is parallel to the contact surface.
Disadvantages :-
Three disadvantages of friction are :
- Friction produces heat which damages the moving parts of a machine.
- Friction produces wear and tear on the contacting surfaces.
- This reduces the life of machine parts, tyres and shoe soles.
- A lot of energy is wasted in overcoming the friction before an object starts moving.
Formula :-
F = friction force
U = coefficient of friction
N = normal force
★ Hope you understand this concept ★
Define friction :-
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.
In physics :-
Frictional force refers to the force generated by two surfaces that contacts and slide against each other. A few factors affecting the frictional force: These forces are mainly affected by the surface texture and amount of force impelling them together.
Si unit :-
Newton
Like all forces, the unit for friction is the Newton, which is equal to 1 kg.
Directions :-
Friction when an object slides along a surface. Direction is opposite the object's sliding direction and is parallel to the contact surface. Friction that prevents an object from sliding along a surface. Direction stops the object from sliding against another surface and is parallel to the contact surface.
Disadvantages :-
Three disadvantages of friction are :
- Friction produces heat which damages the moving parts of a machine.
- Friction produces wear and tear on the contacting surfaces.
- This reduces the life of machine parts, tyres and shoe soles.
- A lot of energy is wasted in overcoming the friction before an object starts moving.
Formula :-
F = friction force
U = coefficient of friction
N = normal force
★ Hope you understand this concept ★