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Investigating elevator in motion

  1. Mar 17, 2009 #1
    1. The problem statement, all variables and given/known data
    I am planning a lab where I am investigating the (inversely proportional) relationship between the velocity at which an elevator is moving and the mass inside an elevator.

    1. Estimating distance the elevator is going to travel.
    2. Have a mass of 100 kg inside the elevator (this is later increased)
    3. Measuring the time it taken to go from the bottom to the top floor using a stopwatch
    4. Recording the time.
    5. Repeat for larger masses

    1. I am wondering what would be an appropriate graph to plot using the data obtained.
    2. Should I put uncertainty approximations in the table of results? (ever though I am not actually going to carry out the experiment)

    2. Relevant equations
    v = s/t
    v = velocity (m/s)
    s = displacement (m)
    t = time (s)

    v = k/m
    Where v = velocity (m/s)
    k = the "lift constant" (something I came up with) (m kg/s)
    m = mass inside the elevator (kg)

    3. The attempt at a solution
    1. I think I should graph v on the y-axis and 1/m on the x-axis and then find the slope, but I'm not sure if that will be appropriate.

    (dy/dx = dv/dm ?)

    2. No?
  2. jcsd
  3. Mar 18, 2009 #2
    didn't mean to double post
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