In the Figure,a Uniform Ladder of Weight 200 N and Length

Multiple Choice

In the figure,a uniform ladder of weight 200 N and length 10 m leans against a perfectly smooth wall.A firefighter of weight 600 N climbs a distance x up the ladder.The coefficient of static friction between the ladder and the floor is 0.50.What is the maximum value of x for which the ladder will not slip?

A) 3.9 m
B) 5.0 m
C) 6.0 m
D) 6.3 m
E) 8.4 m