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ND<br />
NDE<br />
NBE<br />
3,13.sen53,13°+NED.sen53,13° = 0 -9,38+NEB+(-3,13).cos53,13°-<br />
(+3,13).cos53,13° = 0<br />
0<br />
NBD<br />
NED = -2,5÷sen53,13° NEB-9,38-1,88-1,88 =<br />
NED = -3,13 KN NEB = 13,14 KN<br />
Nó “D” Forças Verticais (V) Forças Verticais (H)<br />
20<br />
ΣFV = 0 ΣFH = 0<br />
-20-NDE.sen53,13°-NDB.sen53,13°=0 -NDE.cos53,13°-<br />
NDC+NDB.cos53,13°=0<br />
-20-(-3,13).sen53,13°-NDB.sen53,13°=0 -(-3,13).cos53,13°-(-11,26)+(-<br />
21,88).cos53,13°=0<br />
= 0<br />
-20+2,50-NDB.sen53,13° = 0 1,88+12,26-13,13<br />
NDB = -17,50÷sen53,13° 0 = 0<br />
NDB = -21,88 KN<br />
Nó “B” Forças Verticais (V) Forças Verticais (H)<br />
VB<br />
NDB<br />
13,14 = 0<br />
BARRA<br />
20<br />
NDE NDB<br />
NBD<br />
VB<br />
ΣFV = 0 ΣFH = 0<br />
VB+NBD.sen53,13° = 0 -NBD.cos53,13°-NBE = 0<br />
17,5+(-21,88).sen53,13° = 0 -(-21,88).cos53,13°-<br />
0 = 0 0 = 0<br />
FORÇAS NORMAIS<br />
AXIAIS (KN)<br />
ND<br />
NDE<br />
NBD<br />
NBE<br />
NDB<br />
ESFORÇO<br />
20
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