what is friction ? explain some methods in reducing friction?
Answers
Answer:
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.
By polishing the surface, as polishing makes the surface smooth and friction can be reduced. Using lubricants such as oil or grease can reduce the friction between the surfaces. When objects are rolled over the surface, the friction between the rolled object and surface can be reduced by using ball bearings.
Answer:
Friction is a force between two surfaces that are sliding, or trying to slide, across each other.
Methods to reduce friction
Following are the different methods that are used for reducing the friction:
•For objects that move in fluids such as boats, planes, cars, etc, the shape of their body is streamlined in order to reduce the friction between the body of the objects as the fluid.
•By polishing the surface, as polishing makes the surface smooth and friction can be reduced.
•Using lubricants such as oil or grease can reduce the friction between the surfaces.
•When objects are rolled over the surface, the friction between the rolled object and surface can be reduced by using ball bearings.