Question

1. is friction something we always want to reduce? explain.

Explanation:

Friction has both negative and positive aspects. While it causes wear and energy loss (negative), it is essential for activities like walking (positive).

Answer:

No, friction is not always something we want to reduce. For example, when we walk, friction between our feet and the ground is necessary for us to move forward. Without this friction, we would slip and not be able to walk properly. Also, when we write with a pen, friction between the pen tip and the paper is needed to leave marks. However, in some cases like in machinery, excessive friction causes wear and tear and energy loss, so we try to reduce it. But overall, friction has its uses and is not always unwanted.