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Mahesh Chandra • 6.28K Points
Tutor III Physics

Q. Ball bearings are used in cycles, scooters etc to

  • (A) Increase the friction between the wheel and the axle
  • (B) Reduce the friction between the wheel and the axle
  • (C) Reduce the friction between ground and the whee
  • (D) None of the above
  • Correct Answer - Option(B)
  • Views: 764
  • Filed under category Physics
Explanation by: Mahesh Chandra
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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