Answer:
Explanation:
Given:
length of ladder
weight of ladder
position of firefighter
weight of firefighter
angle of ladder
Unknown:
force of the wall on the ladder
force of friction on base of ladder
normal force on base of ladder
From the free body diagram of the sketch you get 3 equations:
Solving the equations gives:
a)
b)
c) Using the result from b and solving for
true
no picture or anything so cant anwser
The answer is: B. -487 ..............