- #1
fableblue
- 17
- 0
Homework Statement
It is known that a force with a moment of 7840 lb in about D is required to straighten the fence post CD. If a=8in. ,b=52 in., and d=112 in., determine the tension that must be developed in the cable of winch puller AB to create the required moment about point D.
Homework Equations
Find angle AED = arctan (52/120) = 23.43degrees
Use M =D x F ; M=7840lb in, D=ED=112 in, F=unknown
Substitute
use algebra to find T(AB)
The Attempt at a Solution
I have attached my attempt but i think I missed something because when i check it does not check. 176.05 x sin23.43 does NOT = 7840 (given)
Now i am stuck
Would someone please give me a little nudge/ where did i go wrong? What i am not seeing?
Thanks
Attachments
Last edited: