PASCO PS-2120A Rotary Motion Sensor - Manual (Page 17)

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P S - 2 1 2 0 A E x p e r i m e n t 3 : C o n s e r v a t i o n o f A n g u l a r M o m e n t u m
17 E x p e r i m e n t G u i d e
2. What percentage of the rotational kinetic energy was “lost” during the collision? Calculate the energy lost
and record the results in the Data Table.
.Data Table 1: Data and Results
Initial angular velocity
Final angular velocity
(experimental value)
Mass of disk (M1)
Mass of ring (M2)
Inner radius of ring (r1)
Outer radius of ring (r2)
Radius of disk (R)
Final angular velocity
(theoretical value)
Percent difference between
experimental and theoretical values
Percent of kinetic energy lost
% KE lost =
1
2
---I
i

i
2 1
2
---I
f

f
2
+
1
2
---I
i
2 
i
2
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