Question

give any five disadvantages of friction..

Please don't copy answers...
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Answer 1

Answer:

Explanation:

1. It causes wastage of fuel and energy.

2. Some of the energy is lost as heat, produced due to the friction.

3. Causes wear and tear of moving parts.

4. Machines produce unwanted noise due to friction

5. Opposes the motion of moving objects.

Answer 2

Answer:

Friction produces a lot of heat in various parts of the machinery and this leads to wastage of energy as heat.

Opposes motion, hence more energy is needed to overcome friction.

Noise production in machines is irritating as well as leads to energy loss.

Forest fires are caused due to friction between branches of trees.