Question

state any three ways by which friction can be reduced

Answer 1

* By lubricating-Lubrication can be used and the surfaces should also be less bumpy or ragged and be able to easily slide over each other.

*1. using grease or any other lubricant

2. using smoother surfaces

3. using fluids of lower viscosity (measure of resistance to flow)
 
4.Use rollers, wheels or ball bearings and

5.Objects like cars and planes are modelled with streamlined shapes. 

Answer 2

* By lubricating-Lubrication can be used and the surfaces should also be less bumpy or ragged and be able to easily slide over each other. 

*1. using grease or any other lubricant 

2. using smoother surfaces 

3. using fluids of lower viscosity (measure of resistance to flow)
 
4.Use rollers, wheels or ball bearings and 

5.Objects like cars and planes are modelled with streamlined shapes.