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Homework Help: Newton's 2nd Law and Motion

  1. Dec 30, 2009 #1
    1. The problem statement, all variables and given/known data

    A 1000 kg elevator is held up by two cables. If each able exerts a force of 6000N upwards upon the elevator, find the elevator's acceleration.


    2. Relevant equations

    Fg=mg

    FNET=ma


    3. The attempt at a solution

    I started with a force diagram to help me and then I think I'm supposed to use the FNET=ma formula. So I plugged in the variables as follows: (6000+6000)-Fge=1000a
    How do you solve for acceleration in this problem when I also need to find the Force that gravity exerts on the elevator (Fge)?

    Would the answer be 2.2m/s^2?
     
    Last edited: Dec 30, 2009
  2. jcsd
  3. Dec 30, 2009 #2

    rock.freak667

    User Avatar
    Homework Helper

    Fge would simply be the weight, mg, of the elevator.
     
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