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 :

Four children were asked to arrange forces due to rolling, static and sliding frictions in a decreasing order. The correct arrangement is :

A big wooden box is being pushed on the ground from east to west direction. The force of friction due to ground will act on this box towards:

A spring balance can be used to measure

A) Mass of an object

B) Force acting on an object

C) Density of an object

D) Weight of an object

The friction between two surfaces does not depend on one of the following. This one is:

If the sliding friction between two surfaces is found to be 8 N, then the static friction between these two surfaces is most likely to be:

Which of the following is not an advantage of friction?

Which of the following statements is incorrect ?

If the static friction between two surfaces X and Y is found to be 20 N, then the rolling friction between these two surfaces should most likely be :

If the static friction between two surfaces P and Q is measured to be 50 N, then the sliding friction between these two surfaces is most likely to be :

Which of the following will produce the maximum friction?

Four similar cars having exactly the same mass are running at the same speed on the same road when brakes are applied at the same time. The cars come to a stop after covering distances of 5 m, 5.5 m, 4.8 m and 5.2 m respectively. The friction between the brake pads and discs will be the maximum in the car which travels the distance of:

The weight of an object can be measured by a:

A book is lying on the horizontal table top. If we tilt the table a little, then the book starts sliding down slowly. This happens because:

A body shape which offers very little resistance to the flow of air (or water) around it is called:

Which of the following should be used to reduce friction on a carrom board?

Which of the following does not have a streamlined shape?

The frictional force exerted by a fluid is called:

A person has applied some mustard oil on his hands. Which of the following objects will become most difficult for him to hold in his hand?

Ball bearing is a device which usually converts: