Find the transfer function, $G(s)=\frac{{}_L(s)}{E_a(s)}$ for the system sho

$J_a=\frac{1}{8}kg*m^2$

$e_a=60V$

For the mechanical elements:

$J_1=\frac{1}{8}kg*m^2,J_2=1kg*m^2,$

$L_L=J_4=2kg*m^2,K=1N*\frac{(m)}{ra{d}^{\text{'}}}$

$D=1N*m*\frac{(s)}{\text{r}\text{a}\text{d}},D_L=4**D.$

$\frac{N_2}{N_1}=\frac{N_4}{N_3}=2.$