Exploring the Factors that Affect Frictional Force

In summary, frictional force is a macroscopic effect caused by atomic size electromagnetic forces. It can decrease the velocity of an object and is a nonconservative force, meaning its work is path dependent. There are two types of friction: dry and fluid, which depend on factors such as surface roughness, normal force, fluid viscosity and density, body shape and angle of incidence, and velocity.
  • #1
pitchharmonics
29
0
What is frictional force and its causes to increase or decrease?
 
Physics news on Phys.org
  • #2
frictional force is a macroscopic effect of atomic size electromagnetic forses.
It usually causes the decreasion of the velocity and because of being a nonconservative force, has a path dependent integral. (I mean the work) and decreases the total energy of the body
 
  • #3
There are two kinds of friction: dry and fluid. Dry friction increases with the roughness of the two surfaces in contact and the normal force between the surfaces.
Fluid friction depends on the viscosity and density of the fluid (air, water, oil,...), the cross section of the body perpendicular to the direction of movement, the shape of the body, the angle of incidence (angle between the velocity vector and the symmetry axis of the body) and to the velocity (for high speeds it is proportional to the square of the velocity).
 

What is Frictional Force?

Frictional force is a type of force that occurs when two surfaces come in contact and resist motion. It is caused by the microscopic roughness of the surfaces and the interlocking of their irregularities.

How is Frictional Force measured?

Frictional force is measured in units called Newtons (N). It can be measured using a device called a spring scale, which measures the amount of force needed to overcome friction and move an object.

What are the two types of Frictional Force?

The two types of frictional force are static friction and kinetic friction. Static friction occurs when two surfaces are not moving relative to each other, while kinetic friction occurs when two surfaces are in motion.

What factors affect the amount of Frictional Force?

The amount of frictional force is affected by several factors, including the nature of the surfaces in contact, the force pressing the surfaces together, and the presence of any lubricants between the surfaces.

Why is Frictional Force important?

Frictional force plays an important role in daily life and many industrial processes. It allows us to walk, drive, and grip objects, and it also helps prevent objects from slipping or sliding. In industrial processes, frictional force can be both useful and harmful, as it can help with tasks such as braking and drilling, but it can also cause wear and tear on machinery.

Similar threads

Replies
7
Views
786
Replies
4
Views
791
Replies
4
Views
1K
Replies
2
Views
2K
  • Mechanics
Replies
17
Views
111
Replies
6
Views
1K
Replies
11
Views
1K
Replies
21
Views
1K
  • Mechanics
Replies
10
Views
1K
  • Mechanics
Replies
7
Views
2K
Back
Top