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N54<br />
N62<br />
N52<br />
Nó “6” Forças Verticais (V) Forças Verticais (H)<br />
ΣFV = 0 ΣFH = 0<br />
-15-N65 = 0 -N62+N67 = 0<br />
N65 = -15 KN -(-17,88)+N67 = 0<br />
N67 = -17,88 KN<br />
Nó “5” Forças Verticais (V) Forças Verticais (H)<br />
ΣFV = 0 ΣFH = 0<br />
N52.sen45°+N56+N57.sen45° = 0 -N52.cos45°-<br />
N54+N57.cos45°+N58 = 0<br />
2,29.sen45°+(-15)+N57.sen45° = 0 -2,29.cos45°-<br />
16,3+18,9.cos45°+N58 = 0<br />
= 0<br />
N85<br />
15<br />
N65<br />
N56<br />
N67<br />
N57<br />
N58<br />
N57.sen45°+1,62-15 = 0 N58-1,62-16,3+13,36<br />
N57 = 13,38÷sen45° N58 = 4,5 KN<br />
N57 = 18,9 KN<br />
Nó “8” Forças Verticais (V) Forças Verticais (H)<br />
N87<br />
N89<br />
N85+N87.cos71,57°+N89 = 0<br />
15<br />
N65<br />
N52 N56 N57<br />
N87<br />
N62<br />
N52<br />
N54<br />
N85<br />
ΣFV = 0 ΣFH = 0<br />
N87 = 0 -<br />
N67<br />
N57<br />
N58<br />
N87<br />
N89<br />
44
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