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 ladder,just at the wall.What is the magnitude of the force that the ladder exerts on the wall?

A) 740 N
B) 1,300 N
C) 980 N
D) 900 N
E) 1,100 N