A boy runs his toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be :
As the roughness of the surface increases, the friction force increases.

Question

A boy runs his toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be :

Philoid · Accepted Answer

As the roughness of the surface increases, the friction force increases.