Question

does friction present during pure rolling??.....because as the bottom most point is in relatively at rest so we can say no friction....
but friction is generally required for the object to roll to give torque by which it has omega....
does the friction only acts initially?????and do it act throughout the whole motion....
SO...WHAT'S THE CONCEPT HERE....I'M QUITE CONFUSED....
help..if you know..
(no useless comments plzz)​

Answer 1

Answer:

Rolling Friction

Explanation:

There are mainly three frictional forces

-static frictional force

-sliding frictional force

-rolling frictional force

The rolling frictional force is very less than the other two.

you can compare it by day to day activities,when you push a heavy box it seems to conserve more energy

but when you push the same box when it's on a vehicle(with no engine) which is commonly used in malls or supermarket it would be easier.

hence,you can say that the friction won't be zero

but instead it would decrease