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.
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