MCQ
Which is a suitable method to decrease friction
- ABall and bearings
- BLubrication
- CPolishing
- ✓All the above
✓
Answer
Correct option: D.
All the above
d
(d)Ball and bearing produce rolling motion for which force of friction is low. Lubrication and polishing reduce roughness of surface.
(d)Ball and bearing produce rolling motion for which force of friction is low. Lubrication and polishing reduce roughness of surface.
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