does friction present during pure rolling??.....because as the bottom most point is in 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....
SO...WHAT'S THE CONCEPT HERE....I'M QUITE CONFUSED....
help..if you know..
(no useless comments plzz)
Answers
Answer:
we dont say a body is purely rolling just by saying that bottom most poin is in rest.
the concept involved is the bottom most point must be at rest relative to the object it is placed upon. we usually say. V at bottom most point shld be zero. But in actual sense body shld be at rest relative to the object it is placed upon.
so correct version will be checking if the bottom most of body point and the top most point of the object on which the body is placed on must have same acceleration.
friction provides torque needed to rotate the body and whatever i mention above is responsible for translation motion motion without slipping. both combined gives pure rolling aka rolling without slipping.
Explanation:
Hey sorry to ask here comments not working,
why everything is calculated with respect to axis only,why can't we use x and y coordinate system to calculate angular displacement I'm not getting this answer anywhere on internet??