1. Class 8
  2. Chapter 12 Class 8 - Friction
  3. Extra Questions

What are ball bearings?

Last updated at June 3, 2019 by

Ball Bearings.jpg

Ball bearings is a device which consists of a ring of small metal balls

It reduces friction between the surfaces its rolling on

How a BallBearing works.gif

 

  1. Class 8
  2. Chapter 12 Class 8 - Friction

    3. Extra Questions

    Chapter 13 Class 8 - Sound →
Class 8
Chapter 12 Class 8 - Friction

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 9 years and a teacher from the past 16 years. He teaches Spoken English, Written English, Grammar and Vocabulary at Englishtan.