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: Girl climbing a rope

  1. Feb 6, 2008 #1
    1. The problem statement, all variables and given/known data

    A 55.0 kg student climbs a 4.00 m long rope and stops at the top.
    (a) What must her average speed be in order to match the power output of a 200-W lightbulb?

    (b) How much work does she do?

    2. Relevant equations

    Well if i had to guess...they might be

    P=W/time total


    3. The attempt at a solution
    Last edited: Feb 7, 2008
  2. jcsd
  3. Feb 7, 2008 #2
    It's OK to be unsure of the relevant equations but not OK when you only give the question. The forum is here to help you, not to do your homework for you.

    So don't be shy; which equations do you even half-suspect may be relevant?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook