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{SECT 0 {EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 38 "restart;#define ang
le thet=60 degrees\n" }{MPLTEXT 1 0 16 "thet:=60*Pi/180;" }}{PARA 0 ">
 " 0 "" {MPLTEXT 1 0 0 "" }}{PARA 11 "" 1 "" {XPPMATH 20 ",$I#PiG%*pro
tectedG#\"\"\"\"\"$" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 48 "#mem
ber elongations nda=(sin(thet),-cos(theta))\n" }{MPLTEXT 1 0 31 "dad:=
ux*sin(thet)-uy*cos(thet);" }}{PARA 11 "" 1 "" {XPPMATH 20 ",&*&I#uxG6
\"\"\"\"\"\"$#F&\"\"#F(I#uyGF%#!\"\"F)" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 49 "#member elongations ndc=(-sin(thet),-cos(theta))\n" }
{MPLTEXT 1 0 32 "dcd:=-ux*sin(thet)-uy*cos(thet);" }}{PARA 11 "" 1 "" 
{XPPMATH 20 ",&*&I#uxG6\"\"\"\"\"\"$#F&\"\"##!\"\"F)I#uyGF%F*" }}}
{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 8 "dbd:=uy;" }}{PARA 11 "" 1 "" 
{XPPMATH 20 "I#uyG6\"" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 37 "#f
orce balance at the hub: w=WLo/EA \n" }{MPLTEXT 1 0 27 "#sum forces in
 y-direction\n" }{MPLTEXT 1 0 43 "Fdy:=-dbd+(dad+dcd)*cos(thet)+w*cos(
theta);" }}{PARA 11 "" 1 "" {XPPMATH 20 ",&I#uyG6\"#!\"$\"\"#*&I\"wGF$
\"\"\"-I$cosG6$%*protectedGI(_syslibGF$6#I&thetaGF$F*F*" }}}{EXCHG 
{PARA 0 "> " 0 "" {MPLTEXT 1 0 27 "#sum forces in x-direction\n" }
{MPLTEXT 1 0 39 "Fdx:=(-dad+dcd)*sin(thet)+w*sin(theta);" }}{PARA 11 "
" 1 "" {XPPMATH 20 ",&I#uxG6\"#!\"$\"\"#*&I\"wGF$\"\"\"-I$sinG6$%*prot
ectedGI(_syslibGF$6#I&thetaGF$F*F*" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 18 "uy:=solve(Fdy,uy);" }}{PARA 11 "" 1 "" {XPPMATH 20 ",
$*&I\"wG6\"\"\"\"-I$cosG6$%*protectedGI(_syslibGF%6#I&thetaGF%F&#\"\"#
\"\"$" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 18 "ux:=solve(Fdx,ux);
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edGI(_syslibGF%6#I&thetaGF%F&#\"\"#\"\"$" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 41 "#force Fad=EA*dad/L0, or in terms of W: \n" }{MPLTEXT
 1 0 17 "Fad:=factor(dad);" }}{PARA 11 "" 1 "" {XPPMATH 20 ",$*&I\"wG6
\"\"\"\",&*&-I$sinG6$%*protectedGI(_syslibGF%6#I&thetaGF%F&\"\"$#F&\"
\"#!\"\"-I$cosGF+F.F&F&#F3F0" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 
0 17 "Fcd:=factor(dcd);" }}{PARA 11 "" 1 "" {XPPMATH 20 ",$*&I\"wG6\"
\"\"\",&*&-I$sinG6$%*protectedGI(_syslibGF%6#I&thetaGF%F&\"\"$#F&\"\"#
F&-I$cosGF+F.F&F&#!\"\"F0" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 
17 "Fbd:=factor(dbd);" }}{PARA 11 "" 1 "" {XPPMATH 20 ",$*&I\"wG6\"\"
\"\"-I$cosG6$%*protectedGI(_syslibGF%6#I&thetaGF%F&#\"\"#\"\"$" }}}
{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 18 "#to plot, set w=1\n" }
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