Do you agree with the statement, "friction is both good and an evil"? Explain with examples.

Yes, friction is both good and bad.

Friction is advantageous:

1. While walking as without friction it would be difficult for us to step on the ground

2. In the movement of vehicles on road.

3. In holding a pencil while writing.

Friction is disadvantageous:

1. As more work is to be done while movement of an object.

2. Due to friction, there will be wear in machines. As a result, their life and efficiency get reduced.