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: Solve a problem relating to IMA HELP!

  1. Mar 10, 2010 #1

    nicoled

    User Avatar

    solve a problem relating to IMA!! HELP!

    a dolly with cans has a combined mass of 72kg (x 9.8 = Fr) and is pushed up a hill.
    the hill has an angle of inclination of 12.5 degrees and the cans are pushed a distance of 15m (De) in a time of 8.21 seconds. a constant force of 356.2 N (Fe) is necessary to push the loaded dolly up the hill at a constant velocity. calculate the following:

    ideal mechanical advantage of the inclined plane (hill):


    IMA = De / Dr

    IMA = 15m / Dr

    How do I find distance resistance???
     
    nicoled, Mar 10, 2010
  2. jcsd
    Phys.org - latest science and technology news stories on Phys.org
  3. Mar 10, 2010 #2

    ideasrule

    User Avatar
    Homework Helper

    Re: solve a problem relating to IMA!! HELP!

    That's the distance that the cart travels vertically (against gravity), since without the dolly, you'd have to lift the cans upwards.
     
    ideasrule, Mar 10, 2010
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook