Friction cannot be reduced to perfect 0, if two surfaces are touching each other with some pressure.We could make that very small by using suitable methods. Without applying normal pressure, we cannot do any useful work in the world.At microscopic levels, if we look at the surfaces of objects or floor or ice, we find that there are ups and downs. When two surfaces having small ups and downs rub against each other with some force normal to both surfaces, there is bound to be some friction ie., resistance force.Also, there are intermolecular forces between the molecules of one surface and those of the other surface. That contributes to friction.

Friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. It is a result of the interaction between the microscopic irregularities on the surfaces. While it may seem desirable to reduce friction to zero in certain situations, it is not practically possible to completely eliminate friction.



Friction is a fundamental force of nature that plays a crucial role in various aspects of our daily lives. It provides traction for walking, allows us to grip objects, and enables the efficient operation of machinery. However, friction also presents challenges when trying to minimize its effects.



Several factors influence the level of friction between two surfaces:

1. Surface roughness: The rougher the surfaces, the higher the friction. Smoother surfaces experience less friction.

2. Normal force: Friction is directly proportional to the normal force, which is the force exerted perpendicular to the surfaces in contact.

3. Type of materials: Different materials have different coefficients of friction. For example, rubber on asphalt produces higher friction than ice on ice.



While it is not possible to eliminate friction entirely, there are ways to reduce its effects:

1. Lubrication: Introducing a lubricant between the surfaces can significantly reduce friction. Lubricants create a thin film that separates the surfaces, minimizing direct contact.

2. Smoothing surfaces: By polishing or machining surfaces to make them smoother, friction can be reduced. This is particularly effective in industrial applications.

3. Using rolling instead of sliding: Rolling friction is generally lower than sliding friction. By utilizing wheels or ball bearings, the contact area between surfaces is minimized, reducing friction.



While the above methods can greatly reduce friction, it is not possible to completely eliminate it. Here's why:

1. Atomic interactions: At a microscopic level, surfaces are never perfectly smooth. The irregularities on surfaces result in interlocking or adhesive forces, leading to friction.

2. Universal Laws: Friction is a consequence of the fundamental laws of nature. The laws of thermodynamics and motion dictate that some energy will be lost as heat due to friction.

3. Practical constraints: Completely eliminating friction would require an ideal environment with no external influences. However, factors such as air resistance, temperature changes, and wear and tear will always introduce some amount of friction.



While it is not possible to reduce friction to zero, we can employ various techniques to minimize its effects. Understanding the factors influencing friction and utilizing methods like lubrication, smoothing surfaces, and using rolling instead of sliding can significantly reduce friction in practical applications. However, it is important to recognize that friction is a natural force with its own limitations and implications in everyday life.

Friction can never be Decreasd to 0. even if 2 surface are completely flat, they have some friction between them, called adhesion.