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!

Homework Help: Find the mass

  1. Jan 31, 2008 #1
    1. The problem statement, all variables and given/known data
    A pump with a power output of 600W raises water from a lake through a height of 3.0m and delivers it with a velocity of 6.0 ms^-1. what mass of water is removed from the lake in one minute?

    2. Relevant equations
    Kinetic Energy = 1/2*m*v²

    3. The attempt at a solution
    600 = 1/2*M*6.0²
    M = 200kg
  2. jcsd
  3. Jan 31, 2008 #2
    You can't substitute 600W for the kinetic energy, because energy is measured in joules, not watts. Try and use [tex]P=F*V_{ave}[/tex].
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook