Question

Write any three disadvantages of friction.​

Answer 1

Answer:

they are

Explanation:

Disadvantages of friction:

It always resists the motion, so extra energy is required to overcome it.

It causes wear and tear of machines.

It decreases the life expectancy of moving parts of vehicles.

Answer 2

Answer:

1. The main disadvantage of friction is that it produces heat in machines.

2. some useful energy is wasted as heat energy.

3. Due to friction we have to exert more power in machines.

4. Due to friction, noise is also produced in machines.

5. Due to friction, engines of automobiles consume more fuel.

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