A1=4;
Aw=3;
g=9.81;
hmax=10;
Az2=[(-Aw*sqrt(2*g*hmax)/A1]
Bz2=[1/A1]
Cz2=[1]
Dz2=[0]
Z2=ss(Az2,Bz2,Cz2,Dz2)
figure(1)
step(Z2)
figure(2)
impulse(Z2)
figure(3)
nyquist(Z2)
figure(4)
bode(Z2)
figure(5)
pzmap(Z2)