Explain the importance of friction. Describe friction as a 'necessary evil.'
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friction allows objects to move. without it nothing would be able to move. but it alsoakes movement harder. it slows down objects as well as allowing them to move, therefore, friction is a necessary evil.
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Frictional force causes a lot of losses in general upkeep and wear and tear of machinery. 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. Hence it is considered as a necessary evil.
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