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Friction as a friend and a foe 11 лет назад


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Friction as a friend and a foe

http://www.cbselabs.com/threads/give-... Frictional force is very useful in several sitnations. If there were no friction between the wheels and the road, no vehicle would be able to move. If there were no brakes in a bicycle, there would be many accidents. It is the frictional force between the road and the wheel or between the wheel and the brake that vehicles can move and stop.

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