Determine the nonlinear ODE modeled by the Simulink diagram shown above.
Use ONLY the following symbolic variables and functions (though you do not have to use them all): y, u, sin(), and sqrt(). These symbolic variables and functions are case sensitive (e.g. A, a, etc.). Include mathematical operators *, /, +, -, etc. as appropriate between variables (e.g. A*cos(b*t), Acos(bt), etc.).
d2y/dt^2 =