Sebastian has drawn a free-body diagram for a ladder of mass m leaning against a frictionless wall. His diagram is shown below.

http://i628.photobucket.com/albums/u...89/mc022-1.jpg


a. "fs" is in the wrong direction.
b. Vector P should be directed upwards, not down.
c. Vector P should be perpendicular to the wall, not parallel to it.
d. Vector N should be down into the floor for "fs" to have the given direction.
e. Vector P is correct, but there should also be a force perpendicular to the wall.

I think the wrong point is b. The vector should be perpendicular to the ladder.

Yes thank you, I thought it was B also, I just wanted a second opinion. I also realize I typed in "fs" instead of "fg"

Lol, well, the 'g' was so small, I thought that was an 's'. Glad I was able to help! :)