A 40-Kg Uniform Ladder That Is 5

Multiple Choice

A 40-kg uniform ladder that is 5.0 m long is placed against a smooth wall at a height of h=4.0 m, as shown in the figure. The base of the ladder rests on a rough horizontal surface whose coefficient of static friction with the ladder is 0.40 . An 80-kg bucket is suspended from the top rung of the Iadder, just at the wall. What is the magnitude of the force that the ladder exerts on the wall?

A) 1300 N
B) 900 N
C) 980 N
D) 1100 N
E) 740 N