1. The problem statement, all variables and given/known data A bungee jumper jumps with a mass of 61kg jumps off of a bridge. The massless bungee cord is 25m long and beyond that length acts as a spring. The jumper reaches the lowest point 42.9m below the bridge. Find the force constant which characterizes the bungee cord. 2. Relevant equations W = F X d F = -kx 3. The attempt at a solution First I calculated the work for mg. Wmg = 42.9 * 61(9.8) = 25646J Since the object stops, the object has a net work of zero. So: -25646 = 17.9 * F F = -1433N -1433 = -k(17.9) k = 80N/m. This seems far too low, could someone please tell me where my logic is flawed? I think it might be In the assumption that balancing net work accounts for the object stopping but i am not sure. Thanks in advance!