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NEA<br />
ΣFV = 0 ΣFH = 0<br />
NDA-100 = 0 NDE = 0<br />
NDA = 100 KN<br />
Nó “A” Forças Verticais (V) Forças Verticais (H)<br />
ΣFV = 0 ΣFH = 0<br />
NAB.sen22,62°-NAD-NAE.sen22,62° = 0<br />
NAB.cos22,62°+NAE.cos22,62° = 0<br />
= 0<br />
0÷cos22,62°<br />
”2”<br />
10<br />
NAB<br />
NAE<br />
NDE<br />
NAB.sen22,62°-100-NAE.sen22,62° = 0 (NAB+NAE).cos22,62°<br />
(NAB-NAE).sen22,62° = 100 NAB+NAE =<br />
NAB-NAE = 100÷sen22,62°<br />
NAB-NAE = 260 ”1” NAB+NAE = 0<br />
Sistema <strong>de</strong> Equações Substituindo na equação<br />
“1” ou “2”<br />
“1” NAB-NAE = 260 NAB+NAE = 0<br />
“2” NAB+NAE= 0 130+NAE = 0<br />
2NAB = 260 NAE = -130 KN<br />
NAB = 260÷2<br />
NAB = 130 KN<br />
10<br />
NAB<br />
NA NA NAE<br />
Nó “E” Forças Verticais (V) Forças Verticais (H)<br />
NEB<br />
+<br />
NEA NEB<br />
NEA<br />
NAB<br />
NAE<br />
NEF<br />
38
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