Physics
Ball bearings are used in cycles, scooters etc to
Increase the friction between the wheel and the axle
Reduce the friction between the wheel and the axle
Reduce the friction between ground and the whee
None of the above
Reduce the friction between the wheel and the axle
The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. Reduce the friction as rolling friction is the least, rather than sliding or static friction.
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