3 c the inertial balance
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The Inertial Balance Il Bottoni fa scienza 2013 IIIC
Transcript of 3 c the inertial balance
The Inertial BalanceIl Bottoni fa scienza 2013
IIIC
How do spacemen measure mass in space?
We have repeated the experiment simulating
the absence of gravity.
Data Collection
Mass (g) t. oscillation (s) St. Dev. oscillation (s)
86 0,37 0,01
186 0,47 0,01
286 0,56 0,01
386 0,65 0,02
486 0,72 0,01
586 0,78 0,02
Data Processing
0 100 200 300 400 500 600 7000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
f(x) = 0.06 x 0̂.40R² = 0.99
Mass (g)
Tim
e (
s)
Could it be a quadratic dependance?Time^2 - Mass
Mass (g) T. oscillation (s) St. Dev oscillation (s) T^2 St. Dev.
86 0,37 0,01 0,13 0,01
186 0,47 0,01 0,23 0,01
286 0,56 0,01 0,32 0,02
386 0,65 0,02 0,42 0,02
486 0,72 0,01 0,52 0,02
586 0,78 0,02 0,61 0,03
Data Processing 2
0 100 200 300 400 500 600 7000
0.1
0.2
0.3
0.4
0.5
0.6
0.7f(x) = 0.00x + 0.05R² = 1.00
Mass (g)
Tim
e2̂
(s
2̂)
We must calculate an unknown mass
T=0,53 s
T²=0,28 s²
0 100 200 300 400 500 600 7000
0.1
0.2
0.3
0.4
0.5
0.6
0.7f(x) = 0.00x + 0.05R² = 1.00
Calibration graph
Mass (g)
Tim
e2̂
(s
2̂)
M=250 g – 86 g = 164 g
Outcomes
M=164 g M=157 g
