Friction is a not necessary evil explain with examples
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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. On the other hand, it is also unecessary at times.
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1. without friction not able to walk by putting a feet on ground.
2.we would not be able to write with pen or pencil if there is no friction.
3. the break of the vehicle also work due to the friction.
4. is an object starts moving, it will never stop if there is no friction.
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