Write a computer program in MATLAB which allows you to input various lengths of links
of the four-bar linkage and then to determine if the linkage is a double-crank (parallel or
drag link), crank-rocker, rocker-crank or a double-rocker mechanism. Show the output
of your program for each of the five cases.
If the linkage is a crank-rocker mechanism, and given that, the crank, coupler, follower
and fixed links are of lengths, 50 mm, 200 mm, 150 mm and 205 mm the program should
also do the following,
(a) Calculate, tabulate and plot the variations of the follower's angular displacement
$\theta_4$, velocity $\dot{\theta_4}$ and acceleration $\ddot{\theta_4}$ for one revolution of the crank in steps of
5$^o$.
(b) Calculate, tabulate and plot the variations of the coupler's angular displacement
$\theta_3$, velocity $\dot{\theta_3}$ and acceleration $\ddot{\theta_3}$ for one revolution of the crank in steps of
5$^o$.
