The nature of the surface. A measure of this is the coefficient of friction.
The two factors that affect the friction force between two surfaces are the nature of the surfaces in contact and the normal force pressing the surfaces together. Surface roughness, material properties, and the force pushing the surfaces together all influence the magnitude of friction between them.
Speed does not affect the force of friction.
The three factors that affect the force of friction are the weight of the object, the roughness of the surfaces in contact, and the normal force pressing the surfaces together.
Simply put, friction reduces output force. The more friction there is, the less effectively power will be delivered, and this results in reduced output force.
Inertia
Friction equals the coefficient of friction times the normal force. Friction increases as the roughness of the materials increases. It also increases as the force pushing the materials together increases.
The two variables that affect friction are the surface roughness of the materials in contact and the force pressing the surfaces together. As the roughness increases or the force increases, friction typically increases as well.
Surface types can affect the force of friction because as the surface gets rough and rougher it has more friction and smooth surface has less friction. if we compare the affect of friction force on a ice and road. Road is much more rough than the ice chunk and if we slide a ice hockey puck on each of the surfaces, we get that smoother surfaces has less friction.
The mass of an object is constant. The force of friction is a force that resists motion. When an object moves on a surface, the force of friction opposes the motion. Depending on the properties of the surface, the force of friction will change. This difference in frictional properties is demonstrated by 'mu' a greek symbol. Force of friction = mu x Force of gravity = mu x mass x acceleration due to gravity.Therefore, as the mass of an object increases, so does the force of friction that acts upon it while in motion. mu is a constant for a specific surface, so it is a value you have to be given in some cases in order to calculate the force of friction. Comparing ice and ashphalt, ice would have a lower friction coefficient, mu, than ashphalt would and therefore, the force of friction on any given mass moved on either surface would be greater on an ashphalt surface.
The two factors that affect the magnitude of friction are the nature of the surfaces in contact and the normal force pressing the surfaces together. Friction is stronger when the surfaces are rough and when the normal force increases.
Since friction means a contact force, the nature of contact will influence friction force. Smoothness of objects affect the friction force. However, as contact pressure rises, the friction does not rise.
The mass of a sliding object does not directly affect friction. Friction is primarily influenced by the nature of the surfaces in contact and the normal force pressing them together. However, in some cases, a heavier object may increase the normal force, which in turn can increase the friction force.