stick slip code for matlab

Problem plotting stick slip graph with this code, where am I going wrong?

[t,y] = ode45(@Stick_Slip,[0:0.01:10],[0.01; 0]);

figure
 plot( y(:,1),y(:,2) )
    xlabel( 'Position' )
    ylabel( 'Velocity' )
title('Stick-Slip');

function dy = Stick_Slip(t,y)
m = 1;
k = 100;
V = 0.5;
Mu=0.5;
c = 2;

f = c*y(2) + k*y(1);

if f <= Mu*m*9.81
    dy(1,1) = V;
    dy(2,1) = 0;
else
    dy(1,1) = y(2);
    dy(2,1) = (f - k*y(1) - c*y(2)) / m;
end
end

[John D'Errico]

And your question is what? The mind reading toolbox is fuzzy today,so we need for you to tell us what is on your mind.

[Milind Khanna]

I am actually having problem in plotting the graph showing stick slip but I am not getting the desired output with the above code. Could you tell where I am doing the mistake?

Thank you.

[venkatesu u]

Show me the Stick_Slip function