Lakhmir Singh & Manjit Kaur - Science

Book: Lakhmir Singh & Manjit Kaur - Science

Chapter: 12. Friction

Subject: Physics - Class 8th

Q. No. 20 of Very Short Answer Type Questions

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20

What is the purpose of using ball bearings in machines?

Ball bearing reduce friction between the support loads and axles of a vehicle.


20

Chapter Exercises

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