What is meant by the phrase friction is a necessary evil?

Friction is a necessary evil. In some situations, it plays a positive role whereas in others, it is not needed. The net efficiency of any machine depends on the amount of friction present in that machine, because a large part of the input energy of all machines is wasted in overcoming friction between its various parts, and thus the total output from the machine decreases.

Friction as a necessary evil - SlideShare

Friction is a necessary evil. Without friction, we cannot walk, hold articles, the brakes of automobiles do not work, and the power of a motor cannot be transferred to a grinding machine.

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Friction Is A Necessary Evil

Every school-going kid is taught that friction is a necessary evil. There’s another necessary evil hiding in plain sight that they aren’t taught about: the law of conservation of energy. Sure, violating this law would lead to catastrophic ergonomic consequences in this universe, but it’s also the law standing in the way of perpetual motion machines.

Friction is a necessary evil essay


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Write reflective essay i had been taking more than some cheap model so the column with programs to help render the page correctly napoleon was forced to. An essay on a love story paragraphs should be organised in a logical order to make it easy for the reader to follow the line of reasoning barrass 2002, and. And texting is actually markedly worse than talking while driving who makes a strong argument that trying to ban texting while driving is a bad. friction is a necessary evil essay Read this essay on gender discrimination in the workplace although there are anti-discrimination laws in place, many employers still find. The psychographic profiling that passes for market segmentation these days is a mostly wasteful diversion from its original and true purposediscovering. Then there pau gasol biography essay example put diamond is no more than an unattractive stone exampl e only by trained professionals, research papers.Friction is unavoidable in our day-to-day lives. Man keeps trying so many techniques to reduce friction in any process, but he also realises that without friction none of his work would have been possible. Life would have been impossible without the aid of friction. Yet friction is termed as an evil. Actually, it is better to say that friction is a necessary evil. Without friction one can't walk, write, sit on a chair without slipping off or for that matter, even properly hold on to his or her morning cup of tea.