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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.

    Method:
    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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