explain with three example that friction is a necessary evil?
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friction is said to be a necessary evil because it is useful as well as harmful. friction helps us to walk, write, hold things, lift objects. So it is necessary in our lives. Without friction many essential processes can not be done. examples : walking, writing,
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The examples to illustrate that friction is a necessary evil are: If friction were absent, we would not be able to walk. Friction is necessary to burn a matchstick. It is due to friction that we can write on a board by a chalk.
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