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Homework Help: Potential Energy

  1. Nov 29, 2007 #1
    A 55-kg hiker starts at an elvation of 1600 m and climbs to the top of a 3100-m peak. (a) What is the hiker's change in potential energy? (b) What is the minimum work required of the hiker? (c) Can the actual work done be more than this? Explain
     
  2. jcsd
  3. Nov 29, 2007 #2
    i know how to do part a, but can you by any chance help me with my problem, its titeled LOOP problem with DIAGRAM!
     
  4. Nov 29, 2007 #3
    a) mgh= mgh
    55(9.81)(1600)=(55)(9.81)(h)

    you just solve for height by the equation above.
     
  5. Nov 29, 2007 #4

    rcgldr

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    > Can the actual work done be more than this?

    What's the aerodynamic drag at 1 to 3 miles per hour?
     
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