1. Not finding help here? Sign up for a free 30min 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!

Energy consumed by a motor

  1. Nov 26, 2007 #1
    1. The problem statement, all variables and given/known data
    A small air compressor operates at 1.1 hp electric motor for 5.6 hours a day. How much energy is consumed by the motor daily?

    2. Relevant equations

    1hp = 750 watts

    3. The attempt at a solution
    1.1hp= 825 watts
    5.6 h=20160s
    (825w)(20160s)=16632000J I'm confused on what the question is asking for, is it asking for work?
  2. jcsd
  3. Nov 26, 2007 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    What you've done is correct. A Watt is one joule per second, thus your answer is in joules and is therefore a value for energy. Work is just the change in energy of an object.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?