Answers

2015-06-26T13:57:53+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
By eliminating solid-solid sliding contact. A solid is defined as a material that can support shear (lateral force). When two solids come into contact, imperfections in the surface interfer with each other and resist slide by their shear strength. Liquids or micoscopic balls of graphite (dry lubricant) flow or roll to reduce shear forces the result in friction.
0
  • Brainly User
2015-06-26T14:07:23+05:30
Because it makes surface smooth and there is less friction on smooth surface
0