- Roughness/smoothness of the sliding object.
- Roughness/smoothness of the surface.
- Shape/design of the object.
- Normal force acting upon the sliding bodies.
- Dry friction is independent of the surface area of a contact.
- Type of friction involved(rolling/sliding)
What are the factors which affect friction between two solid surfaces?
The frictional force between two bodies depends mainly on three factors: (I)
the adhesion between body surfaces (ii) roughness of the surface
(iii) deformation of bodies.
Which factors affect the friction between two surfaces Class 8?
The nature of the surface (smoothness or roughness)
affects the friction. Smooth surfaces have lesser irregularities. The lesser the irregularities, the lesser the tendency to lock. The lesser the tendency to lock with another object, the lesser the friction (that is tendency to oppose motion).
Which factors can affect the amount of friction acting on an object on a solid surface?
Which factors can affect the amount of friction acting on an object on a solid surface?
the weight of the object and the force of a push the type of surface and the weight of the object the force of a push and the motion of the object the motion of the object and the type of surface
.
Is friction affected by surface area?
Friction does not depend on
the amount of surface area in contact between the moving bodies or (within certain limits) on the relative speed of the bodies. It does, however, depend on the magnitude of the forces holding the bodies together.
What is the relationship between friction and motion?
Friction is
always opposite to the direction of motion
. The frictional force between two surfaces in attempting to slide one object across the other but neither objects are moving with respect to each other. The friction is always equal to the net force parallel to the surface.
What factors do not affect friction?
Friction does not depend on
the amount of surface area in contact between the moving bodies
or (within certain limits) on the relative speed of the bodies. It does, however, depend on the magnitude of the forces holding the bodies together.
Does friction depend on mass?
The mass of a body decides the gravitational force that one object applies on the other object. Therefore, greater the mass of the object, more is the friction due to weight of the object. … Hence, we can say that the
friction depends on both the mass and the nature of the two bodies sliding over one another
.
Which type of friction is the weakest?
Rolling friction
is the weakest kind of friction. It is the force that resists the motion of an object rolling across a surface.
How can we reduce and increase friction of a surface?
To reduce friction we can make the
surfaces in contact smooth
. Also adding a lubricant to two surfaces in contact reduces friction between them. Grease is added between the moving parts in machines, to reduce friction. Another method of reducing friction is by using bearings.
What type of friction keeps an object at rest?
Sliding Friction While
static friction
keeps an object at rest, sliding friction slows down an object that slides. … You have to keep pushing to overcome the force of sliding friction.
What are two factors that affect the gravitational attraction between objects?
When dealing with the force of gravity between two objects, there are only two things that are important –
mass, and distance
. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
What is the main cause of friction?
Friction is caused
due to the irregularities of the surfaces in contact
. The coefficient of friction depends on both the surfaces in contact. It is not a characteristic property of any substance. Molecular adhesion is the attraction between the molecules of two different surfaces.
Why does friction not depend on surface area?
Friction is a contact force when two surfaces interact. … Notice that both of these friction formulas ONLY depend on the coefficient of friction and the normal force. It does not depend the area of contact, it doesn’t depend on the
sliding speed
.
Does friction depend on shape?
So if there are two bodies in motion (considering they are made of the same material, shape are moving at the same speed) then
the larger body will suffer greater friction due to it’s larger area of contact
.
What three ways can reduce friction?
- Make the surfaces smoother. Rough surfaces produce more friction and smooth surfaces reduce friction.
- Lubrication is another way to make a surface smoother. …
- Make the object more streamlined. …
- Reduce the forces acting on the surfaces. …
- Reduce the contact between the surfaces.
