Question

4 disadvantages if friction with each examples? Pls guys answer my question

Answer 1

Answer:

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, hence more energy is needed to overcome friction.
3. Noise production in machines is irritating as well as leads to energy loss.
4. Forest fires are caused due to friction between branches of trees.

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Answer 2

The force of friction Is the force between two surfaces when touched and that affects in the opposite direction of the movement, being considered a resistance.

The Newton's First Law of Motion States that an object in motion tends to remain in motion unless some external force slows or stops it.

The main disadvantage of friction is that it produces heat in various parts of the machines. In this way, useful energy is expended as a loss in thermal energy.

For example, car engines become warmer due to friction. This could overheat and damage them.

2-Due to friction, you have to exert more power in the machines, to overcome the losses.

3-Opposes the motion, ie, counteracts the movement, so it takes more energy to move.

4-Due to friction, noise occurs in machines.