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Question
An 87 kg
person stands on a uniform ladder 4.0 m
long, that weighs 90 N
, as shown in the figure(Figure 1). The floor is rough; hence, it exerts both a normal force, f1
, and a frictional force, f2
, on the ladder. The wall, on the other hand, is frictionless; it exerts only a normal force, f3
.
A) Find the forces exerted on the ladder when the person is three-fourths of the way up the ladder.
Transcribed Image Text:f₁
2
mg
a-3.8 m
Expert Solution
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Step 1
Given,
mass of a person m = 87 kg
length of uniform ladder L = 4.0 m
weight of ladder W2 = 90 N
man is at a distance of three-fourths of a way up the ladder.
weight of the ladder acts in the middle of the ladder.
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