Question

Demonstrate an activity to show that rolling friction is less than sliding friction
content 2marks
presentation 2 marks
Neatness & timely submission 1 mark
Total 5 marks

Answer 1

Answer:

Explanation:

Let us take a thick book on our table.Now push the book with your hands.We will find that it is not very easy

to put the thick book lying on the table and make it move.We have to apply fairly large amount of force to

make the book Move or slide on the table.When the book lying directly on the surface of table moves,then

sliding friction comes into play.The large sliding friction between the surface of table and the bottom of

thick book makes the book comparatively difficult to move.

Place the round pencils parallel to one another on the table top.Let us place the same thick book over the

round pencils.Now push the book with your hands. When we push the book ,the round pencil kept below it

start rolling or turning and make the book move forward easily.We have to apply a very small amount of

force to make the book move when it is placed on rollers. It is much more easy to move the book placed on

rollers then to slide it directly over the surface of table.

It is much easier to move an object kept on rollers then to slide it because rolling friction is much less than

sliding friction.