1. If we rub our palms together, we will fell our palms become warmer because friction produces heat.

2. If we try to move a heavy object, we will find that it is difficult to do so. This is because friction opposes the motion.

3. If we rub an eraser against a surface, we will find that the eraser becomes smaller. This is because friction causes wear and tear.

4. Also, without friction, an object cannot be placed in a fixed position.