1
Aritra Chakrabarti
·2012-03-04 00:49:43
if the ground has friction, then normal reaction force in the upward direction, its weight in the downward direction, and frictional force towards right, since it has tendency to slide down. if there is no friction from the ground as well (which you have not mentioned) then an external force is required to hold it against the wall, otherwise the arrangement is not possible.
1
Debayan Singha
·2012-03-04 03:07:04
why confused?? its simple...
1. gravity acts downward from the c.m.[ i.e. the point you marked]
2. friction if the ground has friction..
and components dividing is child's play..
but if there is no friction on the ground than the rod slips down to fall flat on the groound..