Question

Friction between two flat surface cannot reduce by

Answer 1

Explanation: Friction can be minimized by using lubricants like oil and grease and by using ball bearing between machine parts. A substance that is introduced between two surfaces in contact, to reduce friction, is called a lubricant.
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Answer 2

• The roughness of the surfaces in contact can be increased, which increases friction.
• Use of lubricants such as oil and grease, as well as the use of ball bearings between machine parts, can help to reduce friction.
• A lubricant is a material used to minimize friction between two surfaces that are in touch.

Friction is the force that prevents solid surfaces, fluid layers, and material components sliding against one another from moving in the same direction. Friction comes in several forms:

Dry friction : A force opposing the relative lateral motion of two solid surfaces in contact is known as dry friction. Static friction (stiction) between non-moving surfaces and kinetic friction (friction between moving surfaces) are the two types of dry friction. Dry friction is caused by the interaction of surface characteristics, known as asperities, with the exception of atomic or molecular friction.

Fluid friction : The friction between layers of a viscous fluid moving relative to one another is referred to as fluid friction.

Lubricated friction : When a lubricating fluid separates two solid surfaces, it is referred to as lubricated friction.

Skin friction : Drag is a force that resists the movement of a fluid across the surface of a body. Skin friction is one of the components of drag.

Internal friction : Internal friction is the force that opposes movement between the components that make up a solid substance when it deforms.