Question

waht we can reduce 100%friction if no than why?​

Answer 1

Answer:

We didn't have sufficient Energy!!!!!!

Answer 2

Imagine a rock rolling down a mountainside. It continues rolling down, till it meets a boulder which is quite large and is lying motionless on the path of the rock. The rock collides with the boulder and comes to rest. Its motion stops. There is a loud noise during the collision. What stops the rolling rock? This phenomenon, which is responsible for stopping objects in motion, is known as friction. It generally acts in the opposite direction with respect to the direction of motion. Friction – Friction is the force, which resists the relative motion of surfaces or bodies sliding against each other. The surfaces can be solid, or between layers of fluids, or material/elements.

Friction is said to be a necessary evil. Without friction, motion once started would not cease at all and would continue perpetually.

The Law of Conservation of Energy is however not violated due to friction.

There are different types of friction. They are:

Dry friction is a force which opposes the relative lateral motion of two solid surfaces which are in contact. Dry friction can be subdivided into static friction (“stiction”) between immobile surfaces, and kinetic friction which operates between moving surfaces. With the exception of atomic or molecular friction, dry friction generally occurs due to the interaction of surface features, which are termed as asperities.

Fluid friction is the friction between the various layers of a viscous fluid that are moving relative to each other.

Lubricated friction is that type of fluid friction where a lubricant fluid separates two solid surfaces.

Skin friction is the force resisting the motion of a fluid across the surface of a body, constituting a part of drag.

Internal friction is the force resisting motion between the elements making up a solid material while it undergoes deformation.

The study of friction forms an important aspect in the study of mechanics. The ancient Greeks were interested in studying friction. The laws of friction were elucidated by Leonardo da Vinci, but these were formally rediscovered and published by Guillaume Amontons and the laws of dry friction became known as Amonton’s three laws of dry friction. Other scientists who have taken the understanding of the role of friction forward are Coulomb, van Musschenbroek, Leslie, Morin, Jenkin and Ewing, Tabor, etc.

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