Give examples to show that friction is both a friend and a foe.
Advantages of friction are as follows:
- We are able to walk.
- We can write.
- Friction is used to stop the vehicle.
- It produces heat.
- Helps in different types of motion.
Disadvantages of friction are as follows:
- Forest fires occurs due to friction between branches of trees.
- It is an opposing force, so energy is needed to overcome it.
- Tyres and soles of shoes tears out.
- Damage machines.
- It produces a lot of heat.
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