with the help of examples, prove that friction is an necessary evil
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eg. when we run wearing sports shoes so it helps us to not to sleep this is because this sport shoes have rough surface....
so friction is helpful to US and also necessary it also helps us to write...
so friction is helpful to US and also necessary it also helps us to write...
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eg. when we rae running our sports shoes wear out.
eg. our tyres of anything wear out
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