Question

1. Name the kind of frictional friction, that comes into play, when a book, kept
on a collection of cylindrical pencils, is moved by pushing it.
2. Why are objects given special shapes when they are moving through fluids?Write the name given to these special shapes?
Please answer this I'll mark as brainliest ​

Answer 1

1) Rolling friction

2) Objects having only streamlined body shape can move in fluids because this body shape helps them to cut through the fluid either it is water or air.....

Answer 2

Answer:

1) That friction is called rolling friction

Explanation:

2) That objects have to overcome the fluid friction without loss or damage so they change into special shapes which are called streamlined. The special shape body is called streamlined body. Hope it will help you!!!