Question

why are ball bearings used in machine​

Answer 1

Answer:

Heya Mate ❤

Explanation:

As it is known that the lowest resistance or friction is rolling friction,

therefore,

to reduce the friction to the maximum extent

Ball bearings are used

Ball Bearings convert any type of friction to rolling friction so machine parts that are rolling or machines like grinders use this for reducing the effort and work energy

they are used in fidget spinners too^_^

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Answer 2

Answer:

to make it smooth working