Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Energy stored problem

  1. Oct 17, 2004 #1
    Im really stuck with this question, hoping someone could give me a hand :cry:

    A bungee rope of unstretched length 50M is designed to allow a 70Kg man to come to rest 85m below the platform from which he jumps.

    Calculate the energy stored in the rope when the man has come to rest. Ignore the weight of the rope.
    (Gravitational field strength 9.8)


    Calculate the gravitational potential energy lost by the man when he comes to rest.


    Am i right to do
    70 x 9.8 = 686N
    Work Done = Force x Displacement
    =24.1Kj?

    Im not sure if im using the correct formula, and im totally stuck on the 2nd part :frown:
     
  2. jcsd
  3. Oct 17, 2004 #2

    pervect

    User Avatar
    Staff Emeritus
    Science Advisor
    Insights Author

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Similar Discussions: Energy stored problem
Loading...