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![[Post New]](/templates/default/images/icon_minipost_new.gif) 28 Dec 2007 00:03:14 IST
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in pure rolling direction of friction is difficult to find out.
for eg:
A body is rolling with linear velocity v and rotating with angular velocity 
case1
if we take friction is acting front.
then it will decrease and increase v
and it will slip
case2
if it acts backwards
then it will increase and decrease v.
and again it will slip
i hope this was useful
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