what are ball bearings? how are they useful?
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2
ball bearings is a type of rolling elements....
they are useful to reduce friction
they are useful to reduce friction
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4
Ball Bearings are the circular shaped objects which reduces the friction.
These are used in fidget spinner.....
These are used in fidget spinner.....
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PriyamPathak:
what a diagram
he was asking about the function
thanks
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