Friction can be reduced by using the following methods:
1. Polishing the surface
2. Using a lubricant
3. Using a ball-bearing
Friction between two flat surfaces can be reduced by
State one way in which the friction between wheel and its axle can be reduced.
Friction between two surfaces may be reduced by all of the following methods EXCEPT:
Friction can be reduced to zero by applying lots of lubricants between surfaces.