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mass of e is 100 kg
mass of bar is 20 kg and acts at midpoint
sume of moments about point a due to weight of bar and forces on b by bc, bd, and be, are 0, determine tensions in bc and bd
so i continued like this.
The moment about point A from all those forces is 0.
0 = (Raf x Wab) + (Rab x Wbe) (Rab x Tbc)  (Rab x Tbd)
I can figure out the first two terms of this eq, but i have to find magnitude of the vectors of Tbc and Tbd. But i only have this equation and these two equations:
Tbc= Tbc*Ebc where Ebc is a unit vector in BC direction
Tbd= Tbd*Ebd where Ebd is a unit vector in the BD direction
Did i set this up incorrectly or how do i proceed?
a picture has been included.
Thanks for your help
Pt A is at the origin
Pt D is (0,5,5)
Pt C is (0,4,3)
Pt B is (4,3,1)
Pt E is where the 100 kg weight is
AB is the bar where 20 kg acts down the midpoint
any help is APPRECIATED!
mass of bar is 20 kg and acts at midpoint
sume of moments about point a due to weight of bar and forces on b by bc, bd, and be, are 0, determine tensions in bc and bd
so i continued like this.
The moment about point A from all those forces is 0.
0 = (Raf x Wab) + (Rab x Wbe) (Rab x Tbc)  (Rab x Tbd)
I can figure out the first two terms of this eq, but i have to find magnitude of the vectors of Tbc and Tbd. But i only have this equation and these two equations:
Tbc= Tbc*Ebc where Ebc is a unit vector in BC direction
Tbd= Tbd*Ebd where Ebd is a unit vector in the BD direction
Did i set this up incorrectly or how do i proceed?
a picture has been included.
Thanks for your help
Pt A is at the origin
Pt D is (0,5,5)
Pt C is (0,4,3)
Pt B is (4,3,1)
Pt E is where the 100 kg weight is
AB is the bar where 20 kg acts down the midpoint
any help is APPRECIATED!
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