In this can't we apply the conservation of angular momentum about the point at which the collision happens
Since if we use that point then any force that is coused during collision passes through that point so produces no torque about that point so why we can't apply conservation of angular momentum
Plz explain both why or why not we can do this
And also put a reply on my previous doubts on discussion forums
But if see from outside it is just a point of space and friction always act through that point so can't we choose such a point in space not on body through which friction always passes
Plz help on this too
This could have been done if it would have came in contact for an instant just like you have in case of collision or something of that short
In this case we can think of a point as A then why can't we do the same for the given problem
Plz put this ques as separate topic in forum
This one is related to the continuous discussion so how can I put all the stuff in one single draft
In case rolling of sphere or wheel on a plane surface in absence of any external applied force,no friction acts
The scenario which you have put the page happens before rolling begin and in that case angular momentum is not conserved