Some points are given below which show that friction is both a friend and a foe:
(a) Friction as friend:
- It allows us to grip and catch any object.
- It helps us to walk comfortably on the floor.
- It helps to minimise the speed or to stop any moving object.
- It helps us to write.
(b) Friction as foe:
- It causes wear and tear in objects.
- It causes damage to the parts of machines and tools which further require money to get them repaired.
- It reduces the speed of moving objects, so more force is required.
· It produces hurdles in moving any object freely.
