No it is not required.. It can be solve using conservation of angular momentum...
5 Answers
Grandmaster
·2010-03-29 09:42:41
isn't friction coeffivient of the wall required as when there will be a collision there would be a rotational impulse of μwall J (J being the linear impulse)!!!!
Anjalee
·2010-03-29 09:46:09
Asish Mahapatra
·2010-03-29 19:14:11
@grandmaster: it is given the wall is smooth, so it wont give any frictional impulse.