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ΣFV = 0 ΣFH = 0<br />
NCB.sen26,57°-NCA.sen26,57°-NCE-NCD.sen26,57°=0 -40-NCB.cos26,57°-<br />
NCA.cos26,57°+NCD.cos26,57° = 0<br />
22,36.sen26,57°-(-22,36).sen26,57°-0-NCD.sen26,57°=0 -40-22,36.cos26,57°-(-<br />
22,36).cos26,57°+44,7.cos26,57°=0<br />
ND<br />
NDE<br />
NCE NC NCE NC<br />
10+10-NCD.sen26,57°=0 -40-<br />
20+20+40 = 0<br />
NCD = 20÷sen26,57° 0 = 0<br />
NCD = 44,7 KN<br />
Nó “D” Forças Verticais (V) Forças Verticais (H)<br />
20<br />
0<br />
ND<br />
20<br />
NDE<br />
ΣFV = 0 ΣFH = 0<br />
-20+NDC.sen26,57° = 0 -NDC.cos26,57°-NDE = 0<br />
-20+44,7.sen26,57° = 0 -44,7.cos26,57°-(-40) =<br />
-20+20 = 0 -40+40 = 0<br />
0 = 0 0 = 0<br />
BARRA<br />
FORÇAS NORMAIS<br />
AXIAIS (KN)<br />
ESFORÇO<br />
NAB 10 TRAÇÃO<br />
NBC 22,36 TRAÇÃO<br />
NAC -22,36 COMPRESSÃO<br />
NAE -40 COMPRESSÃO<br />
NEC 0 -<br />
NED -40 COMPRESSÃO<br />
NCD 44,7 TRAÇÃO<br />
ND<br />
8
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