A ladder of mass m and length l leans up against a wall at an angle , as shown. The coefficient of static friction between the ladder and the floor is and the vertical wall is frictionless. What is the maximum angle such that the ladder does not fall?
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a
uniform ladder of length
and mass
rests against a frictionless wall. The ladder makes an angle
with the horizontal. (a) Find the horizontal and vertical forces the ground exerts on the base of the ladder when a firefighter of mass
is a distance
from the bottom. (b) If the ladder is just on the verge of slipping when the firefighter is a distance d from the bottom, what is the coefficient of static friction between ladder and ground?
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