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Homework Help: Homework help

  1. Oct 11, 2007 #1
    Pretty sure I got it right just gonna ask you guys to make sure.

    1. The problem statement, all variables and given/known data
    An elevator with a mass of 1.10e3 accelerates upward at 0.45 m/s squared. What is the force acting on the elevator's support cable?


    2. Relevant equations
    F=ma


    3. The attempt at a solution
    The 9.8 is for gravity.
    f=(1.10e3)(0.45+9.8)
    f=1.12e4
    I think I got the right amount of sig figs to but im not to good with those.
     
  2. jcsd
  3. Oct 11, 2007 #2
    Looks right to me.
     
  4. Oct 11, 2007 #3
    Looks good. The general rule of thumb for the # of sig figs is to look at the original problem; whatever the LOWEST amount of sig. figs. used in the problem statement is, is what you should give your answer in.

    Casey
     
  5. Oct 11, 2007 #4
    Thanks guys We have a take home test this week and im feeling pretty good about it. I don't get the whole take home part though because were aloud to use the internet and whatever but if i have any questions ill be sure to ask.
     
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