Question

Write some situations where friction is undesireable for us​

Answer 1

Answer:

Two examples where friction force is undesirable

1.friction causes wear and tear in machine parts.

2. additional energy is consumed to overcome friction

Explanation:

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Answer 2

Answer:

• Friction is not desirable in moving parts of engines of vehicles. Even with radiator full of cold water the engine can overheat and slow down its travel. The driver is forced to stop and rest the vehicle.
• It is also not desirable when sliding heavy objects up the inclined plane. More force is needed to raise the load to a desired height.
• It is undesirable while ice skating.
• friction is that it produces heat in various parts of machines. In this way some useful energy is wasted as heat energy.
• Due to friction we have to exert more power in machines.

This much shall be sufficient.

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