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10.3(1-cos ) kN<br />
Dari persamaan keseimbangan dapat dihitung Nc<br />
(NFD), Vc (SFD), <strong>dan</strong> Mc (BMD):<br />
A<br />
Ncy = Nc.cos α<br />
Nc<br />
Mc<br />
C<br />
Ncx = Nc.sin α<br />
Vcx = Vc.cos α<br />
Vc<br />
Vcy = Vc.sin α<br />
R 1 = 3 m<br />
SFD<br />
Fx = 0<br />
Nc sin – Vc cos = 0<br />
Vc = Nc sin<br />
/ cos<br />
BMD<br />
Mc = 30.3(1-cos ) – 30(1-cos ). ½.3(1-cos )<br />
Mc = 90(1-cos ) – 90/2.(1-cos ) 2<br />
Mc = 90(1-cos ) – 45.(1-cos ) 2<br />
R AV = 30 kN<br />
3(1-cos )<br />
NFD<br />
Fy = 0<br />
30 – 30(1-cos ) + Nc cos + Vc sin = 0<br />
30 – 30 – 30.cos ) + Nc cos + (Nc sin / cos ) sin = 0<br />
30.cos + Nc cos + Nc sin 2 /cos = 0<br />
Nc = – 30.cos 2<br />
Vc = – 30. sin .cos
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