FÓRMULAS CENTROIDES
-
Upload
juan-alfonso-beltran -
Category
Documents
-
view
391 -
download
4
Transcript of FÓRMULAS CENTROIDES
-
7/25/2019 FRMULAS CENTROIDES
1/1
Figura 5.8A Centroides de reas comunes.
x
O C
r
Forma reax
x
x
y
yrea triangular
Un cuarto de reacircular
rea semicircular
Un cuarto de reaelptica
reasemielptica
reasemiparablica
rea parablica
Enjuta parablica
Enjuta general
Sector circular
C
CC
y
yCC
x
x
CCy
y
h3
bh2
b2
b2
4r
4r
3a
4
3a8
3h5
3h
10
2ah3
3h5
4ah3
ah
3
4b
44r
2
2
4b4
4a
OO
O
O
O
O
O
O
r
h
0
a
a
a
a
a
b
y= kx2
h
h
n+ 1n+ 2
a n+ 14n+ 2
h ahn+ 1
C
0
0
0
x
y
y= kxn
h
C
32rsen
r2
3
3
3
33
3
r2
r2
ab
ab
2255.4. Primeros momentos de reas y lneas