Body.
IV. Think of all the instances in our daily life where friction acts as a friend and also
when it is a nuisance. Create a poster making in the space provided.
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Advantages of friction:
1. Friction helps us to walk on the ground.
2. We can write due to friction.
3. Friction helps in applying the brakes.
4. It helps in generating heat when we rub our hands together.
Disadvantages of friction:
1. Friction produces a lot of heat in various parts of the machinery and this leads to wastage of energy as heat.
2. Opposes motion of any object, so more energy is needed to overcome friction.
3. Noise production in machines is annoying.
4. Forest fires are caused due to friction between branches of trees.
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