What are the causes and effects of friction?
Friction is a force that resists the relative motion between two objects or materials.
The causes of this resistive force are molecular adhesion, surface roughness, and deformations.
Adhesion is the molecular force resulting when two materials are brought into close contact with each other..
How does friction affect our life?
Whenever two things rub together, some of the energy they have is lost to friction. Basically, in things like car engines, the wheels of your skates, and the chain of your bike, friction is a force that slows you down. In order to overcome friction, you have to work harder.
What happens when friction increases?
Friction causes the molecules on rubbing surfaces to move faster, so they have more energy. This gives them a higher temperature, and they feel warmer.
What are the five disadvantages of friction?
Disadvantages of friction:Friction produces a lot of heat in various parts of the machinery and this leads to wastage of energy as heat.Opposes motion, hence more energy is needed to overcome friction.Noise production in machines is irritating as well as leads to energy loss.Forest fires are caused due to friction between branches of trees.More items…
Why friction is an evil?
Frictional force causes a lot of losses in general upkeep and wear and tear of machinery. Hence it is considered as a evil. But almost all crucial tasks cannot be carried out without the presence of friction. … Hence it is considered as a necessary evil .
What are the harmful effects of friction?
What are the negative effects of friction?The biggest disadvantage of friction is wear and tear that happens as a result of friction. … Friction causes wear and tear in machinery parts and also cause wastage of electricity and energy. … Friction causes moving objects to stop or slow down.