ʜᴏᴡ ғʀɪᴄᴛɪᴏɴ ɪs ɴᴇᴄᴇssᴀʀʏ ᴇᴠɪʟ?
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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.
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Consider a place where we are trying to move out vehicle but we cannot move because of excessive friction . It will be impossible to live in such a world where the force of friction would not allow us to move . But in contrast , it is also impossible to live in world without friction . It will be equally tough to walk in frictionless place . If we try to drive on a frictionless surface , we will be not able to stop once the motion started . It is almost impossible impossible to drive . There friction is said to be necessary .
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