Ponte de macarrão
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cmCos45= CA HIP 0,71=12,5 = HIP=17,6 cm HIP Sen45= CO HIP 0,71= CO = CO= 12,5 cm 17,6
12,5 cm
45°
17
12,5 cm
,6
B
25 cm
D
F
H
17,
6c
m
45° A C
25 cm
h=12,5 cm
E
G
I
P=20N P=10N P=10N P=10N
P=10N
B
D
F
H
45° A AC=10.21 C E G
AB
=-1
4 .0 8
P=20N P=10N P=10N P=10N
P=10N
B Y
COS45°=NABX = NAB
NABX=NAB.COS45 NABX=0,714.NAB NABX=0,71.(-14.08) NABX=-10,20
NAB
.08 B= -14
X
SEN45°=NABY = NAB NABY=NAB.SEN45 NABY=0,0,71.NAB NABY=0.71.(-14.08) NABY= -10 FY=0 0.6998.NAB+10=0 NAB=- 10 NAB=-14.08 0.71 FX=0 NAC+0.7144.NAB=0 NAC+0.71.(-14,08)=0 NAC=10
NA
Y
45° A
NAC=10
C
X NAC
P=10N
P=10N
B
NBDX
D
NBDY
FX=0 NBD+0.71NBC-(-10)=0 NBD+0.71NBC+10=0 NBD+0.71NBC=-10 NBD+0.71.14,08=-10 NBD=-20
NBCX
NA
B=
-1 4
.08
N
45° A
NAC=10N
NBCY
C
FY=0 -0.7NBCY-(-10)=0 -0.7NBCY+10=0 NBC= -10 -0.71 NBC=14.08N
P=10N
P=10N
NBD=-20N
B
D
NBC
.08
N
= 14
B=
-14
,08
NA
N
45° A
NAC=10 N
C
NCE
E
P=10N
P=10N
P=20N
NBD=-20N
COS45°=NCDX = NCD
B
D
Y
NCDX=NCD.COS45 NCDX=0,714.NCD NCDX=0,714.(-14.2898) NCDX=-10,20
NBC
.08
X
SEN45°=NCDY = NCD NCDY=NCD.SEN45 NCDY=0,0,71.NCD NCDY=0.0,71.(-14.2898) NCDY= -10
N
= 14
B=
-14
,08
NA
N
45° A
NAC=10 N
C
NCE
E
FY=0 0.71.NCD+10=0 NCD=- 10 NCD=-14.08 0.71 FX=0 NCE+0.7144.NCD=0 NCE+0.7144.(-14,08)=0 NCE=10.21
P=10N
P=10N
P=20N
NBD=-20N
B
D
NBC
N
,08
-14
45° A
NAC=10 N
C
NCE = 10 N
NC D=
B=
NA
-14
.08
N
N
= 14 ,08
E
P=10N
P=10N
P=20N
NBD=-20 N
B
D
NDF
F
FX=0 NDF+0.71NBEX-(10)=0 NDF+0.71NBE-10=0 NDF+0.71NBE=+10 NDF+0.71.28,57 =-10 NDF=-30,28
NDEX
NBC
N
.08
B= -14
NC D=
NA
-14
.08
N
N
= 14 ,08
45° A
NAC=10 N
NDEY
FY=0
C
NCE = 10N
E
-0.7NDE-(-20)=0