Question

Anil runs her toy car on the dry marble floor, wet marble floor, newspaper, and towel spread on the floor. Write the force of friction acting on the car on different surfaces in increasing order OF the two factors on which the force of friction depends?

Answer 1

Friction is a resistive force, which comes into play when there is a relative motion between two bodies in contact. The frictional force between two bodies depends mainly on three factors: (I) the adhesion between body surfaces (ii) roughness of the surface (iii) deformation of bodies

wet marble floor< dry marble floor< newspaper< towel

friction force decreases in wet surfaces compared to dry surfaces because of less interaction between solid – liquid than interaction between solid-solid.