Give reason ball bearings are used in some machines
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It is used in the machines to reduce friction, because we all know that rolling friction is smaller than sliding friction and ball-bearings are the things that changes the sliding friction into rolling friction. Examples: Ball-bearings are used in cycles and machines in many industries.
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Ball bearings are used in machines which have lot of movement in their working process. Ball bearings reduce 5he friction during motion ,so that efficiency of the machines is increased ,and they move in a smooth manner.
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