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

Homework Help: Work energy theorem problems cracking my heard

  1. Jan 18, 2005 #1
    Hello members

    Please could you help me with solutions for the following two problems that I am stuck with.

    King Kong is capable of jumping to a maximum vertical height of 10 m. He picks up Enrico Fermi, who is exactly 10% of Kong's mass, and leaps upwards. To what maximum height can King Kong leap to while he is carrying Enrico?

    A skier starts at rest on the top of a strange, smooth, icy hill shaped like a hemisphere. The hill has a constant radius of R. Neglecting friction (it is icy!), show that the skier will leave the surface of the hill and become air-borne at a vertical distance of h = R/3, measured from the top of the hill.

    Many thanks.

  2. jcsd
  3. Jan 18, 2005 #2
    1. Think of the gravitational potential energy.
    2. Draw a diagram, label points and show the energy at those points. Energy is conserved.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook