Question

Question 3
Alida runs her toy car on a 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
(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

The increasing order is as follows.
Wet marble floor, dry marble floor, newspaper and towel. Force of friction acting on the car is minimum when it is moving on a wet marble floor and maximum when it is moving on a towel. Option (a) is the correct answer.