I am having trouble writing a ODE45 function for this bungee jumping problem.

Having trouble with this ode45 function. How do I get the second order of this.

{code}

function [uprime] = ODE4550kg(t,u )

% Set known variables

uprime =[0;0];

m = 50;

g = 9.81;

W= m*g;

c= W/55^2;

D= c.*(u(1)).^2; %(u(1)) represents x prime

B= 100*(u(2)-8); % (u(2)) represents x

R= 3.*(u(1));

if u(2) >= 0 && u(2) <= 8

uprime(1) = (W-D)/m;

uprime(2) = u(1);

else

uprime(1) = (W-D-B-R)/m;

uprime(2) = u(1);

end

[Stephan]

Please provide the code you have tried not pictures of code. Mark pasted code and use the

{Code}

Button

Answer 1

[Torsten]

Take a look at the ballode example:

https://www.mathworks.com/examples/matlab/mw/matlab-ex84325677-simple-event-location-a-bouncing-ball

Best wishes

Torsten.