1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Trying to Work and Power

  1. Feb 2, 2010 #1
    I am working on a lab and I'm not sure how to calculate the work (done by me).

    I know work = W=(F Cos theta) and Force =F= W/t

    In the lab I am to walk up a set of stairs and time myself. I did this and got the following:

    t=8 sec
    d=6m
    Mass(me)= 77kg

    how do I find W?

    Any pointer is greatly appreciated. I know I'm making this harder than it has to be I'm sure.
     
    Last edited: Feb 2, 2010
  2. jcsd
  3. Feb 2, 2010 #2
    I assume that by 'weight', you mean weight in the layman sense and actually mean mass, given that your units are in kilograms. (Wow, 374kg's quite a bit)

    Anyway, the work done by you (against gravity) is simply the increase in (gravitational) potential energy of your body, without having to re-derive and consider forces and direction and whatnot (which may not be very intuitive in such a scenario of climbing stairs).
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Trying to Work and Power
  1. Power and work (Replies: 5)

  2. Work and power (Replies: 1)

  3. Power and Work (Replies: 5)

  4. Power and Work (Replies: 2)

Loading...