Question

Alida runs her 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

MCQ

(a) wet marble floor, dry marble floor, newspaper and towel.

(b) newspaper, towel, dry marble floor, wet marble floor.

(c) towel, newspaper, dry marble floor, wet marble floor.

(d) wet marble floor, dry marble floor, towel, newspaper​

Answer 1

a) is the answer because friction increase on roughness