Examples of Desirable and Undesirable effects of Friction.
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Examples of desirable friction
-In the case of functioning of cars the use of friction is desirable because it leads to the brakes being applied.
-Another example of desirable friction is the friction which allows a person to be able to write on a surface. Because of the fact, that if there is a friction-less surface we cannot write.
Examples of undesirable friction
-Because of friction, whilst using cars, friction is bad for engines as that leads to excessive use of fuel.
-With the use of friction, things tend to get worn out.
-This also has the tendency to affect the effectiveness negatively, like the efficiency of a machinery.
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