Friction is an evil explain this topic with example
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wastes energy
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. Basic activities like walking and writing on a surface are possible due to friction.
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It causes losses in energy transfer and damages machines, but it is a necessary evil because we could not slow down if there was none.
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