Friction is an extremely important force to meteorology. Not only does friction decrease the wind speed, it also changes the direction of the wind. Two types of friction occur in the atmosphere. One is molecular friction (friction between individual air molecules (called viscosity)) and friction between two surfaces (i.e. friction between air and land). Since air molecules are free to move about, friction by viscosity is much less significant than friction between two surfaces.
REDUCE OF FRICTION FORCE
Some of the ways to reduce friction include applying oil, use of ball or roller bearings, streamlining, and use of correct combination of surfaces in contact. Friction is the resistance that one surface or object comes across when moving over another surface or object.
Pushing a plate on a dining table gives a rough feeling but if you were to 'accidentally' drop some water and then push the plate, it would easily glide through. This is because the layer of water between the plate and the table reduces the friction.
ARTI AND SAKINA.