 #1
 64
 1
Homework Statement
Knowing the distance d=1.5m, determine the resultant of the loads acting on the beam shown in the attachment. Specify the point of application of this resultant on the beam.
Given data: F1=100KN, l1=1m. F2=50kN,l2=1.5m. F3=60KN, l3=4m.
Variables: Resultant Force R, and its lever arm L.
Homework Equations
R=F1+F2F3=90KN(Pointing downwards)
Take the most left point as reference:
M=F1*l1F2*l2+F3*l3=65 KN*m (Counterclockwise direction)
The Attempt at a Solution
The problem I have is that, since R is pointing downwards, it will never create a counterclockwise direction moment, hence this problem cannot be solved. But on my book, anwser is given like this:
R=90KN downwards @0.722m from the left end
Thank you for helping me:)
Attachments

69.8 KB Views: 400
Last edited: