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B 9/14/07 11:52 AM C:\Documents and Settings\mcgraw\My Do...\2.c5 mam.m 1 of 1 %2.c5 0/ Theta=[O:.1:90] theta=Theta*pi/18O
Fca=—100+86.6*sin(theta)+l50*cos(theta)
Fcb=100+86.6*sin(theta)—150*cos(theta)
tca=abs(Fca) tcb=abs(Fcb) [tca_min,i]=min(tca)
[tcb_min,j]=min(tcb) Ang1_min=Theta(i) Ang2_min=Theta(j)
plot(Theta,Fca,Theta,Fcb) 0/ o legend('Fca','Fcb',2) 9 o xlabel('Theta(degrees)') ylabel('Cable Tension(lbf)') grid on fprintf('(c)\n') fprintf('Smallest value of Theta for which the tensions are positive is from %Z
g to %g degrees\n',Ang2_min,Angl_min) Z: 39»?
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3’: N” 9/14/07 11:52 AM C:\Documents and Settings\mcgraw\My ...\2.c10 mam.m 1 of 1 %2.clO X=[O:.Ol:5]
P=25*x./sqrt(36—X.A2)
T=250./sqrt(36—x.“2) 9 plot(x,P,x,T)
legend('P','T',2) O , O x1abe1('x(in)')
ylabel('Force(lbf)')
grid on ...
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 Fall '07
 MaureenA.McGraw
 mechanics

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