Question

Gravel is strewn on the slippery ground during the rainy season to __________ friction.

Answer 1

1. Frictional force is a type of contact force. It starts to act whenever two surfaces are in contact with each other or move over one another.
2. During rain, there is a loss of friction on the road. The water fills in the tiny pits on the surface of the road, smoothing out the surface.
3. Due to this the heat and friction are decreased resulting in the road making it more slippery.
4. When gravel is strewn on the slippery road it helps to increase friction on the road.
5. This helps anyone to walk easily and drive easily on the road.

Hence, gravel is strewn on the slippery ground during the rainy season to increase friction.