why friction is a necessary evil???
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Friction is a necessary evil because without friction we can not move , we can not grab anything , we can not do anything. Hence we can not do any activity in our life. Therefore friction is a part of our life and a necessary evil.
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If there is no friction, all objects that are in motion is constantly in motion that is Newtons 1st law of motion that states that an object in motion is in motion unless acted by an unbalanced force. This unbalance force is called frictional force. Hence friction is necessary.
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