V
,
, PROBLEMV5.
1
LocateVtheVcentroidVofVtheVplaneVareaVsh
own.
SOLUTION
AreaV1:V RectangleV72VmmVbyV45Vm
m.
AreaV2:V TriangleVbV=V27Vmm,VhV=V4
A,Vmm2 xV,Vm yV,Vmm xVA,Vmm3 yVA,Vmm3
m
1 3240 36 22.5 116,640 72,900
2 -607.5 9 215 -5467.5 -9112.5
2632.5 11,172.5 63,787.5
XV(2632.5Vmm2V)V=V11,172.5Vmm3
YV(2632.5Vmm2V)V=V63787.5V
mm3
CopyrightV©VMcGraw-
HillVEducation.VPermissionVrequiredVforVreproductionVorVdisplay.
, PROBLEMV5.
2
LocateVtheVcentroidVofVtheVplaneVareaVsh
own.
SOLUTION
A,Vin2 xV,Vin. yV,Vin. xVA,in3 yVA,in3
1 8 0.5 4 4 32
2 3 2.5 2.5 7.5 7.5
11 11.5 39.5
XV(11Vin2V)V=V11.5Vin3
YV(11Vin2V)V=V39.5
Vin3
CopyrightV©VMcGraw-
HillVEducation.VPermissionVrequiredVforVreproductionVorVdisplay.