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: Solving for work and energy

  1. Feb 1, 2010 #1
    1. The problem statement, all variables and given/known data

    In 1985 in San Antonio, Texas, an entire hotel building was moved several blocks on 36 dollies. The mass of the building was about 1.45 x 10^6 kg. If 1.00 x 10^2 J of work was done to overcome the force of resistance that was just 2.00 percent of the building's weight. How far was the building moved?

    2. Relevant equations

    Net Work = deltaKE or deltaKE = KE(final) - KE(initial) = -1/2mv(initial)^2

    3. The attempt at a solution

    I'm confused on what to look for first and what formula to use.
    Could someone please help me out?
    Thank You.
     
  2. jcsd
  3. Feb 1, 2010 #2
    Friction force= (coeff of friction)(Weight)(gravity)

    Work = Force*distance
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook