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//Chapter-4, Illustration 11, Page 142
//Title: Gears and Gear Drivers
//=============================================================================
clc
clear
//Input data
Ta=40// no of teeth on gear A
Td=90// no of teeth on gear D
//Calculations
Tb=(Td-Ta)/2// no of teeth on gear B
Tc=Tb// no of teeth on gear C
//
//x+y=-1
//-40x+90y=45
A=[1 1
-Ta Td]//Coefficient matrix
B=[-1
(Td/2)]//Constant matrix
X=inv(A)*B//Variable matrix
//
//x+y=-1
//-40x+90y=0
A1=[1 1
-Ta Td]//Coefficient matrix
B1=[-1
0]//Constant matrix
X1=inv(A1)*B1//Variable matrix
disp(X(2))
printf('speed of the arm = %.3f revolution clockwise',X1(2))
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