Finding the reactions of a ladder against the floor & wall

1. Jun 20, 2010

skaterbasist

1. The problem statement, all variables and given/known data
[PLAIN]http://img571.imageshack.us/img571/4411/statics.jpg [Broken]

A Man weighing 180lb has climbed 60% of the ladder shown. The ladder weighs 30 lb. Find the forces the wall & floor resists (reactions).

The angle the ladder makes with the floor is 60 degrees.

2. Relevant equations

Summation of forces in the x & y directions is zero since the ladder is in static equilibrium.

3. The attempt at a solution

I'm practically stuck at how to approach this problem. I understand that the summation of forces is zero since its in static equilibrium. But what's really confusing me is how the man standing at that particular area will change the distribution of the forces.

Will there only be a reaction in the y component at the bottom and reaction in the x component at the top?

Any help would be greatly appreciated!

P.S. The course I am taking is about Engineering Mechanics Statics.

Last edited by a moderator: May 4, 2017
2. Jun 20, 2010

Chewy0087

Hint : Moments

Will there only be a reaction in the y component at the bottom and reaction in the x component at the top?

Half right, it's a smooth wall so only x component but it's a rough surface, so you've got to take that into account.

3. Jun 20, 2010

inky

Last edited by a moderator: May 4, 2017