what is friction ? why is it causes? explain any three ways by which friction can be reduced between any two surface in contact
Answers
Answer:
Friction is caused due to the irregularities of the surfaces in contact. ... When the two surfaces are moved against each other these bonds resist the motion creating friction. Roughness of surfaces is also a reason for friction. No matter how smooth a surface looks, it has some irregularities.
Answer:
Friction provides traction that is needed to walk without slipping.
Friction is a force that resists the relative motion between two objects or materials. The causes of the resistive force of friction are: Molecular Adhesion Surface Roughness Plowing effect Adhesion is a molecular force that arises when two materials are brought close to each other.
Following are the different methods that are used for reducing the friction: 1. 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. 2. By polishing the surface, as polishing makes the surface smooth and friction can be reduced. 3. Using lubricants such as oil or grease can reduce the friction between the surfaces.