1.Explain four method by which friction between two solids surface in contact can be reduced. 

Asked by gspublicschool | 20th Mar, 2019, 10:50: AM

Expert Answer:

Friction can be reduced 
- by applying lubricants on the surfaces.
- by polishing the surfaces.
- by using ball bearings/ rolling-element.
- by streamling the surface, this will reduce the area of contact between the two surfaces. 

Answered by Shiwani Sawant | 20th Mar, 2019, 12:51: PM