The height of the jumper isn't given, so when I set up my potential energy equation, I assumed he was just high enough so that he barely touched the ground (the length of the cord plus the max displacement of the cord) so that I didn't have to deal with gravitational potential energy on both...
Homework Statement
A bungee jumper of mass m=70 kg is riding a bungee cord with spring constant k=50 N/m. Its unstretched length is L=9.0 m. What is the amplitude of the jumper's oscillation?
m=70 kg
k=50 N/m
L=9 mHomework Equations
mg(L+x)=(1/2)kx^2
x(t)=Bcos(omega(t)+alpha)
omega =...