Question

write two methods to decrease friction .​

Answer 1

By polishing the surface, as polishing makes the surface smooth and friction can be reduced. Using lubricants such as oil or grease can reduce the friction between the surfaces. When objects are rolled over the surface, the friction between the rolled object and surface can be reduced by using ball bearings.

Answer 2

1. By sprinkling talcum powder.
2. By polishing the surface to reduce irregularities and hence friction.
3. Using lubricants such as oil and ball bearings to decrease friction.

HOPE IT HELPS ❤.