State the methods to reduce friction.

Asked by Topperlearning User | 6th Jun, 2014, 08:32: AM

Expert Answer:

Polishing
Polishing the surfaces reduce the irregularities thereby reducing friction.
 
Lubrication
We reduce friction by using a lubricant, such as oil or grease which is placed between the two surfaces. This often dramatically lessens the coefficient of friction. Basically the lubricant forms a layer between the two surfaces thereby reducing the friction.
 
Bearings
Using "ball bearings" or "roller bearings", where balls or rollers allow the surface to move easily without actually touching each other reduces friction to a great extent.

Answered by  | 6th Jun, 2014, 10:32: AM