Objective: Input-Output Equation Write the state space model of the following train toy system. The input is the force of from the engine denoted as (F) and the output is the velocity of the engine. M k(x,-x) M Ft Mgi -Mgi, F-k(x1 - 32) - Mgi; = M # k(z) - 22)- Mgé2 = M2#2 set all parameters to unity (one), use the p-operator to determine the input-output equation: X1" X1 Xi' = F(t)" + F(t)' + F(t)