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Old Mar17-09, 11:45 PM                  #1
Mathbather

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Posts: 4
Investigating elevator in motion

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?
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Old Mar18-09, 01:08 AM                  #2
Mathbather

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Posts: 4
Re: Investigating elevator in motion

didn't mean to double post
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